AMS Sectional Meeting Full Program
Current as of Friday, April 15, 2005 00:25:30
2005 Spring Central Section Meeting
Lubbock, TX, April 810, 2005
Meeting #1006
Associate secretaries: Susan J Friedlander, AMS susan@math.northwestern.edu
Friday April 8, 2005

Friday April 8, 2005, 12:00 p.m.4:30 p.m.
Meeting Registration
First Floor Lobby, Mathematics and Statistics Building 
Friday April 8, 2005, 12:00 p.m.4:30 p.m.
Exhibit and Book Sale
Room 106, Mathematics and Statistics Building 
Friday April 8, 2005, 2:00 p.m.4:20 p.m.
Special Session on Extinction, Periodicity, and Chaos in Population and Epidemic Models, I
Room 110, Mass Communications Building
Organizers:
Linda J. S. Allen, Texas Tech University lallen@math.ttu.edu
Sophia RueyJen Jang, University of Louisiana at Lafayette jang@louisiana.edu
LihIng W. Roeger, Texas Tech University lroeger@math.ttu.edu

2:00 p.m.
Chaos and Habitat Size.
J. M. Cushing*, Department of Mathematics & Interdisciplinary Program in Applied Mathematics, University of Arizona
R. F. Costantino, Ecology & Evolutionary Biology, University of Arizona
Robert A. Desharnais, Department of Biological Sciences, California State University Los Angeles
Shandelle M. Henson, Department of Mathematics, Andrews University
(100692145) 
2:30 p.m.
Coexistence in a Ricker Competition Model.
Shandelle M. Henson*, Andrews University
J. M. Cushing, University of Arizona
Chantel C. Blackburn, Andrews University
(100692174) 
3:00 p.m.
Periodicity and Global Asimptotic Behavior of Some Nonautonomous Discrete Population Models.
V. L. Kocic*, Xavier University of Louisiana
(100639134) 
3:30 p.m.
The Role of Coinfection in MultiDisease Dynamics.
Maia Martcheva*, University of Florida
Sergei Pilyugin, University of Florida
(100692132) 
4:00 p.m.
Allee effects in a hostparasitoid model.
Sophia R.J. Jang*, University of Louisiana at Lafayette
(100692178)

2:00 p.m.

Friday April 8, 2005, 2:00 p.m.4:50 p.m.
Special Session on Future Directions in Mathematical Systems and Control Theory, I
Room 108, Mass Communications Building
Organizers:
David Gilliam, Texas Tech University gilliam@math.ttu.edu
W. P. Dayawansa, Texas Tech University wdayawansa@yahoo.com

2:00 p.m.
Observability of Complex Systems.
Clyde F. Martin*, Texas Tech University
(10069334) 
2:30 p.m.
On Global Controllability of Planar Affine Nonlinear Systems.
Yimin Sun, Academy of Mathematics and Systems Science, Chinese Academy of Sciences
Lei Guo*, Laboratory of Systems and Control, Academy of Mathematics and Systems Science
(10069369) 
3:00 p.m.
On Agrachev's curvature of optimal control.
Matthias Kawski*, Arizona State University
(10069366) 
3:30 p.m.
Global Output Feedback Stabilization of Nonlinear Systems: A Homogeneous Domination Approach.
Chunjiang Qian*, University of Texas at San Antonio
(10069328) 
4:00 p.m.
Asymptotic InputOutput Linearization via Observer.
Feng Liu, Institute of Systems Science, Chinese Academy of Sciences
Daizhan Cheng*, Institute of Systems Science, Chinese Academy of Sciences
(10069362) 
4:30 p.m.
A Projective Metric of Linear Systems.
X Alex Wang*, Department of Mathematics and Statistics, Texas Tech University
(10069349)

2:00 p.m.

Friday April 8, 2005, 2:00 p.m.2:50 p.m.
Special Session on Statistical Image Processing and Analysis and Applications, I
Room 012, Mathematics and Statistics Building
Organizers:
Victor Patrangenaru, Texas Tech University vpatrang@math.ttu.edu

2:00 p.m.
On improving input estimators with potential applications to Positron Emission Tomography.
Ali Khoujmane*, Texas Tech University
Frits Ruymgaart, Texas Tech University
Victor Patrangenaru, Texas Tech University
(100662249) 
2:30 p.m.
Encoding an arbitrary collection of image edges.
Gopal Lakhani*, Texas Tech University, Department of Computer Science
(100694223) 
3:00 p.m.
Analysis and Statistical Characterisation of Windstorm Damage using Aerial Images.
Lakshminarasimhan V Sampath, Texas Tech University
James Arn Womble*, Texas Tech University
Brian S Nutter, Texas Tech University
Kishor C Mehta, Texas Tech University
(100665253) 
3:30 p.m.
Using Markov Random Fields for Texture Based Radial Segmentation.
Eric Sinzinger*, Texas Tech University
(100662236) 
4:00 p.m.
InterChannel Correlation Measurements for Estimation of Lost Wavelet Coefficients.
Y Sriraja*, Department of Electrical and Computer Engineering,Texas Tech University
Sandip Krishnamurthy, Department of Electrical and Computer Engineering,Texas Tech University
Tanja Karp, Department of Electrical and Computer Engineering,Texas Tech University
(100694179) 
4:30 p.m.
A Simplified Enhanced LBG Algorithm.
Jiangling Guo*, Computer Vision and Image Analysis Lab, Texas Tech University
Sunanda Mitra, Computer Vision and Image Analysis Lab, Texas Tech University
(100694180)

2:00 p.m.

Friday April 8, 2005, 2:00 p.m.4:25 p.m.
Special Session on Undergraduate and Graduate Student Research (and Related Poster Session organized by Ali Khoujmane and Mara D. Neusel, Texas Tech), I
Room 015, Mathematics and Statistics Building
Organizers:
Ali Khoujmane, Texas Tech University akhoujma@math.ttu.edu
Edward W. Swim, Texas Tech University eswim@math.ttu.edu
Edward J. Allen, Texas Tech University eallen@math.ttu.edu
Padmanabhan Seshaiyer, Texas Tech University padhu@math.ttu.edu

2:00 p.m.
Consistency and stability of a nonconforming finite element method for fluidstructure interaction.
Edward W Swim*, Texas Tech University
Padmanabhan Seshaiyer, Texas Tech University
(100665235) 
2:30 p.m.
Improving Regression Function Estimators.
Ali Khoujmane*, Texas Tech University
(10066212) 
3:00 p.m.
Polynomials that Arise in a Polya Urn Gambling Game.
Bret M Hanlon*, Texas Tech University
Clyde F Martin, Texas Tech University
(10060076) 
3:30 p.m.
Stochastic LPA Models Compared.
Kiyomi Kaskela*, Texas Tech University
(100660102) 
4:00 p.m.
Mathematical Model of Visual MotionDetection in Flies.
Baili Chen*, Texas Tech University, Lubbock, TX 79401
Clyde F. Martin, Texas Tech University, Lubbock, TX 79401
(100634144)

2:00 p.m.

Friday April 8, 2005, 2:00 p.m.4:50 p.m.
Special Session on Topology of Continua, I
Room 110, Mathematics and Statistics Building
Organizers:
Wayne Lewis, Texas Tech University wlewis@math.ttu.edu

2:00 p.m.
A continuum $X$ whose hyperspace of subocntinua is not its continuous image.
Alejandro Illanes*, Universidad Nacional Autonoma de Mexico
(100654101) 
2:30 p.m.
Injectivity and Intrinsic Rotations.
James T. Rogers, Jr.*, Tulane University
(10065464) 
3:00 p.m.
Dendroids with only one bottleneck center.
Van C Nall*, University of Richmond
Jo Heath, Auburn University
(10065468) 
3:30 p.m.
On the nfold hyperspace suspensions of continua.
Sergio Macias*, Institute of Mathematics, National University of Mexico
(10065471) 
4:00 p.m.
Properties of Buffers.
Robbie Allen Beane*, University of Missouri, Rolla
(100654142) 
4:30 p.m.
Quotients of Bing Spaces.
Nicholas S Ormes*, University of Denver
Richard N Ball, University of Denver
James N Hagler, University of Denver
(100654239)

2:00 p.m.

Friday April 8, 2005, 2:00 p.m.4:55 p.m.
Special Session on Differential Geometry and Its Applications, I
Room 108, Mathematics and Statistics Building
Organizers:
Josef F. Dorfmeister, Munich University of Technology dorfm@mathematik.tumuenchen.de
Magdalena D. Toda, Texas Tech University mtoda@math.ttu.edu
Hongyou Wu, Northern Illinois University wu@math.niu.edu

2:00 p.m.
Surface Geometry and Algebraically Completely Integrable Systems.
Franz Pedit*, University of Massachusetts at Amherst
C Bohle, TUBerlin
K Leschke, University of Massachusetts, Amherst
U Pinkall, TUBerlin
(100653109) 
3:00 p.m.
KSurfaces (smooth and discrete) of nonfinite type.
Ivan Charles Sterling*, St Mary's College of Maryland
(10065382) 
3:30 p.m.
Transformations of affine spheres.
Erxiao Wang*, University of Texas at Austin
(100653152) 
4:00 p.m.
Willmore tori with nontrivial normal bundle.
Katrin Leschke*, University of Massachusetts, Amherst
(100653212) 
4:30 p.m.
$p$harmonic functions and the minimal surface equation in a Riemannian manifold.
YeLin Ou*, The Univerity of Oklahoma
(10065315)

2:00 p.m.

Friday April 8, 2005, 2:00 p.m.4:45 p.m.
Special Session on Classical and Differential Galois Theory, I
Room 114, Mathematics and Statistics Building
Organizers:
Lourdes Juan, Texas Tech University ljuan@koch.math.ttu.edu
Arne Ledet, Texas Tech University aledet@math.ttu.edu
Andy R. Magid, University of Oklahoma amagid@ou.edu

2:00 p.m.
Iterated PicardVessiot extensions.
Andy R Magid*, University of Oklahoma
(100612181) 
2:30 p.m.
Strongly normal extensions.
Jerald J. Kovacic*, CCNY  The City College of the City University of New York
(100612103) 
3:00 p.m.
Nonintegrability of some problems in Celestial Mechanics: a differential Galois approach.
Juan J. MoralesRuiz*, Universitat Politécnica de Catalunya, Barcelona, SPAIN
(100670169) 
4:00 p.m.
Classification of linear qdifference equations and Galois theory.
JeanPierre Ramis*, Université Paul Sabatier, Toulouse, France and Institut Universitaire de France
(100639108)

2:00 p.m.

Friday April 8, 2005, 2:00 p.m.4:50 p.m.
Special Session on Homological Algebra and Its Applications, I
Room 112, Mathematics and Statistics Building
Organizers:
Alex Martsinkovsky, Northeastern University alexmart@neu.edu
Mara D. Neusel, Texas Tech University mneusel@math.ttu.edu

2:00 p.m.
Auslander's and Bass invariants related to some homological conjectures.
AnneMarie Simon*, Universit\'e libre de Bruxelles
(100613219) 
2:30 p.m.
Stable cohomology for local rings.
Oana Veliche*, University of Utah, Salt Lake City, UT
Luchezar L. Avramov, University of Nebraska, Lincoln
(100613243) 
3:00 p.m.
Gaps in Hochschild (co)homology imply smoothness for commutative algebras.
Luchezar Avramov, University of Nebraska
Srikanth Iyengar*, University of Nebraska
(100613162) 
3:30 p.m.
The Regularity Condition $R_{\ell}$ of Serre for Affine Semigroup Rings.
Marie A. Vitulli*, University of Oregon
(10061378) 
4:00 p.m.
Cluster Categories.
Gordana Todorov*, Northeastern University
(100616241) 
4:30 p.m.
On the AuslanderBuchsbaum  type formulas.
Alex Martsinkovsky*, Northeastern University
(100613206)

2:00 p.m.

Friday April 8, 2005, 2:00 p.m.4:50 p.m.
Special Session on Recent Advances in Complex Function Theory, I
Room 011, Mathematics and Statistics Building
Organizers:
Brock Williams, Texas Tech University williams@math.ttu.edu
Roger W. Barnard, Texas Tech University barnard@math.ttu.edu
Kent Pearce, Texas Tech University pearce@math.ttu.edu

2:00 p.m.
Conformal field theory and the universal Teichmueller space.
David Radnell, Max Planck Institute for Mathematics
Eric Schippers*, Dept. of Mathematics, University of Manitoba
(100630220) 
2:30 p.m.
Experiments in discrete conformal welding.
Ken Stephenson*, University of Tennessee
(100630182) 
3:00 p.m.
Discrete Complex Earthquakes.
Eric M. Murphy*, Texas Tech University
(10063065) 
3:30 p.m.
Holomorphic extensions and theta functions on complex tori.
Roman J. Dwilewicz*, University of Missouri
(100630199) 
4:00 p.m.
Smale's Mean Value Conjecture for Complex Polynomials.
Jeremy T. Tyson*, University of Illinois
(100630237) 
4:30 p.m.
Growth properties of Painlev\'{e} transcendents.
Aimo Hinkkanen*, University of Illinois at UrbanaChampaign
(100630135)

2:00 p.m.

Friday April 8, 2005, 2:00 p.m.4:50 p.m.
Special Session on Topology of Dynamical Systems, I
Room 109, Mathematics and Statistics Building
Organizers:
Brian Raines, Baylor University Brian_Raines@baylor.edu

2:00 p.m.
Coding Expansive Automorphisms of Compact Groups.
Alex Clark*, University of North Texas
R J Fokkink, TU Delft
(100637208) 
2:30 p.m.
On equations of compound and simple limit cycles.
Anatoly B. Korchagin*, Texas Tech University
(100637183) 
3:00 p.m.
Topologizing sets so that a given self map is continuous.
C Good*, University of Birmingham, UK
(100654215) 
3:30 p.m.
Controlled HahnMazurkiewicz Theorem and some new dimension functions of Peano continua.
Taras Banakh, Nipissing University and Ivan Franko National U. of L'viv, Ukraine
Murat Tuncali*, Nipissing University
(100654126) 
4:00 p.m.
Inverse Limits of Upper Semicontinuous Set Valued Functions.
W. T. Ingram, Spring Branch, Texas
William S. Mahavier*, Emory University
(100654110) 
4:30 p.m.
Twopass Maps and Indecomposability of Inverse Limits of Graphs.
W. T. Ingram*, University of Missouri  Rolla
(10065467)

2:00 p.m.

Friday April 8, 2005, 2:00 p.m.4:50 p.m.
Special Session on Theory and Application of Stochastic Differential Equations, I
Room 121, Mass Communications Building
Organizers:
Edward J. Allen, Texas Tech University eallen@math.ttu.edu
Armando Arciniega, University of Texas at San Antonio aarciniega@utsa.edu

2:00 p.m.
Stability and convergence of largescale stochastic hereditary systems under markovian structural perturbations.
Gangaram S. Ladde*, The University of Texas at Arlington
(10069348) 
2:30 p.m.
Stochastic Partial Differential Equations and FiniteTime stability.
M Anabtawi*, American University of Sharjah
S Sathananthan, Tennessee State University
(10066035) 
3:00 p.m.
Stochastic perturbation of dispersionmanaged optical solitons.
Anjan Biswas*, Tennessee State University
(10067839) 
3:30 p.m.
Measures Generated by Stochastic Differential Equations in Banach Space.
Fariborz Asadian*, Fort Valley State University
(10066085) 
4:00 p.m.
Some Results about 2D Euler equation perturbed by noise.
Hakima Bessaih*, University of Wyoming
(10066098) 
4:30 p.m.
A new analysis of the effects of the Asian Crisis of 1997 on Emergent markets.
Y. Liu*, New Mexico State University
M. C. Mariani, New Mexico State University
(10069159)

2:00 p.m.

Friday April 8, 2005, 2:20 p.m.4:50 p.m.
Special Session on Real Algebraic Geometry, I
Room 010, Mathematics and Statistics Building
Organizers:
Anatoly Korchagin, Texas Tech University korchag@math.ttu.edu
David Weinberg, Texas Tech University weinberg@math.ttu.edu

2:20 p.m.
Arf invariants of links and and real algebraic curves.
Patrick M Gilmer*, Louisiana State University
(10065752) 
3:00 p.m.
Real solutions to real sparse polynomial systems.
Evgenia Soprunova*, University of Massachusetts
Frank Sottile, Texas A&M
(100614210) 
3:40 p.m.
Singular Points of Real Quintic Curves.
David A. Weinberg*, Texas Tech University
Nicholas J. Willis, Texas Tech University
(100614136) 
4:20 p.m.
Singular Points of Real Sextic Curves.
David A. Weinberg, Texas Tech University
Nicholas J. Willis*, Texas Tech University
(100614138)

2:20 p.m.

Friday April 8, 2005, 3:00 p.m.4:50 p.m.
Special Session on Discrete Groups, Homogeneous Spaces, Rigidity, I
Room 014, Mathematics and Statistics Building
Organizers:
Alex Gorodnik, University of Michigan,Ann Arbor gorodnik@umich.edu
Hee Oh, California Institute of Technology heeoh@its.caltech.edu
Nicolas Monod, University of Chicago monod@math.uchicago.edu

3:00 p.m.
Metric classification of 3D Riemannian homogeneous spaces of positive Ricci curvature.
Victor Patrangenaru*, Texas Tech University, Department of Mathematics and Statistics
(10065333) 
3:30 p.m.
Cocycle Superrigidity through geometry.
David Fisher, CUNY Lehman College
Theron J Hitchman*, Rice University
(10063796) 
4:00 p.m.
Travelling Salesman Groups.
Azer Akhmedov*, University of California Santa Barbara
(100651122) 
4:30 p.m.
Actions of Chevalley groups on hyperbolic spaces.
Jason F Manning*, Caltech
(10062095)

3:00 p.m.

Friday April 8, 2005, 3:00 p.m.4:20 p.m.
Special Session on Partial Differential Equation and Its Application in Biomedical Study, I
Room 109, Mass Communications Building
Organizers:
Jay R. Walton, Texas A&M University jwalton@math.tamu.edu
Padmanabhan Seshaiyer, Texas Tech University padhu@koch.math.ttu.edu
Akif Ibragimov, Texas Tech University akifibragimov@yahoo.com

3:00 p.m.
On the characterization of hyperelastic membranes in softtissue mechanics.
Padmanabhan Seshaiyer*, TEXAS TECH UNIVERSITY
(100635240) 
4:00 p.m.
Biological Growth and Remodeling in Soft Tissue: Constrained Mixture Model with Constitutive Response in Smooth Muscle Dependent on the Population Number/Size.
Dinara Khalmanova*, Pennsylvania State University
Tsvetanka Sendova, Texas A&M University
Jay R. Walton, Texas A&M University
(100692229)

3:00 p.m.

Friday April 8, 2005, 5:10 p.m.6:00 p.m.
Invited Address
Geometric splitting and superrigidity.
Biology Lecture Hall 100, Biology Building
Nicolas Monod*, University of Chicago
(100651265) 
Friday April 8, 2005, 6:15 p.m.7:30 p.m.
Reception Hosted by the Department of Mathematics
Club Level, Jones SBC Stadium
Saturday April 9, 2005

Saturday April 9, 2005, 7:30 a.m.4:00 p.m.
Meeting Registration
First Floor Lobby, Mathematics and Statistics Building 
Saturday April 9, 2005, 7:30 a.m.4:00 p.m.
Exhibit and Book Sale
Room 106, Mathematics and Statistics Building 
Saturday April 9, 2005, 8:00 a.m.11:20 a.m.
Special Session on Recent Advances in Complex Function Theory, II
Room 011, Mathematics and Statistics Building
Organizers:
Brock Williams, Texas Tech University williams@math.ttu.edu
Roger W. Barnard, Texas Tech University barnard@math.ttu.edu
Kent Pearce, Texas Tech University pearce@math.ttu.edu

8:00 a.m.
On a Problem of Fournier, Ma and Ruscheweyh concerning Extremal Bounded Convex Domains.
Roger W. Barnard, Texas Tech University
Casey R Hume*, Texas Tech University
G. Brock Williams, Texas Tech University
(100630230) 
8:30 a.m.
Cases of equality for refinements of Bernstein's inequality.
Richard Fournier*, CRM(Montreal,Canada)
(10063046) 
9:00 a.m.
Holder continuity of a class of quasiregular mappings.
Albert Baernstein II*, Washington University
Leonid V. Kovalev, Washington University
(100630158) 
9:30 a.m.
Asymptotically Symmetric Embeddings and Conformal Mappings.
Shanshuang Yang*, Emory University
(100630127) 
10:00 a.m.
Discussion (Generalized Quasispheres) 
10:30 a.m.
Sharp Power Mean Bounds for the Hypergeometric Function ${}_2F_1$.
Kendall C Richards*, Southwestern University
(10063381) 
11:00 a.m.
Overdetermined boundary value problems and applications.
Alexander Yu. Solynin*, Department of Mathematics and Statistics, Texas Tech University
(100630222)

8:00 a.m.

Saturday April 9, 2005, 8:30 a.m.11:20 a.m.
Special Session on Future Directions in Mathematical Systems and Control Theory, II
Room 108, Mass Communications Building
Organizers:
David Gilliam, Texas Tech University gilliam@math.ttu.edu
W. P. Dayawansa, Texas Tech University wdayawansa@yahoo.com

8:30 a.m.
A Zero Dynamics Design Methodology for Regulation of a Class of Abstract Boundary Control Systems.
David S Gilliam*, Dept Math and Stat, Texas Tech University
Marinos Bagdati, Dept Math and Stat, Texas Tech University
Matthew Walker, Dept Math and Stat, Texas Tech University
Victor Shubov, Dept Math and Stat, Texas Tech University
(10069332) 
9:00 a.m.
Stability Preserving Approximation Schemes for Control Systems Governed by NFDEs.
Janos Turi*, University of Texas at Dallas
(10066544) 
9:30 a.m.
Explicit Formulae for Several Two Qubit Evolutions.
Viswanath Ramakrishna*, Mathematical Sciences, University of Texas at Dallas
Hong Zhou, Mathematical Sciences, Univ of TX at Dallas
(10069345) 
10:00 a.m.
Inverse Optimal Boundary Feedback Control of a 3D Channel Flow.
Andras Balogh*, The University of Texas  Pan American
Jose A Dominguez, The University of Texas  Pan American
(10063543) 
10:30 a.m.
Approximate Inversion of the Preisach Hysteresis Operator with Application to Control of Smart Actuators.
Ram V. Iyer*, Dept. of Mathematics and Statistics, Texas Tech University, TX 79409.
Xiaobo Tan, Michigan State University
P. S. Krishnaprasad, University of Maryland
(10064661) 
11:00 a.m.
On The Hamilton Jacobi Bellman Equation for a Deterministic Optimal Control Problem.
Betsi J. Tirado*, Universidad del Zulia, Maracaibo, Venezuela
Jesus A. Pascal, Universidad del Zulia, Maracaibo, Venezuela
(100649258)

8:30 a.m.

Saturday April 9, 2005, 8:30 a.m.11:20 a.m.
Special Session on Graph Theory, I
Room 013, Mathematics and Statistics Building
Organizers:
John C. George, Eastern New Mexico University John.George@enmu.edu
Walter D. Wallis, Southern Illinois University at Carbondale wdwallis@math.siu.edu

8:30 a.m.
Cyclic Hamiltonian (Near)Decompositions of the Complete Graph.
Heather J Gavlas, Illinois State University
Joy M Morris*, University of Lethbridge, Canada
(10060536) 
9:00 a.m.
Wiener index and subtrees of binary trees.
L. A. Szekely, Department of Mathematics, University of South Carolina
H. Wang*, Department of Mathematics, University of South Carolina
(10060505) 
9:30 a.m.
Domination in a graph with a 2factor.
Kenichi Kawarabayashi, Tohoku University
Michael D. Plummer*, Vanderbilt University
Akira Saito, Nihon University
(100605143) 
10:00 a.m.
Hamiltonian cycles in Cayley graphs of small order.
Klavdija Kuntnar, University of Ljubljana
Dragan Maru\v si\v c, University of Ljubljana
Dave Witte Morris*, University of Lethbridge
Joy Morris, University of Lethbridge
Primoz \v Sparl, University of Ljubljana
(10060542) 
10:30 a.m.
Excessive factorizations of regular graphs.
W. D. Wallis*, Southern Illinois University, Carbondale
(10060574) 
11:00 a.m.
On minimum size edgeweightings inducing a proper vertex coloring.
Saad I ElZanati, Illinois State University
Heather Gavlas, Illinois State university
Mike Plantholt, Illinois State university
Papa A Sissokho*, Illinois State university
Jozef Skokan, University of Sao Paulo
(10060580)

8:30 a.m.

Saturday April 9, 2005, 8:30 a.m.9:20 a.m.
Special Session on Statistical Image Processing and Analysis and Applications, II
Room 012, Mathematics and Statistics Building
Organizers:
Victor Patrangenaru, Texas Tech University vpatrang@math.ttu.edu

8:30 a.m.
A Least Squares framework for robust Image Registration.
Roopesh Kumar*, Texas Tech University
Brian Nutter, Texas Tech University
(100662254) 
9:00 a.m.
Twochannel Adaptive Orthonormal Filter Banks for Hyperspectral Imagery.
Mihaela D. Quirk*, Los Alamos National Laboratory  Decision Applications Division
Christopher M. Brislawn, Los Alamos National Laboratory
(100694168) 
9:30 a.m.
Nonconvex optimization in Image Analysis.
Sunanda D. Mitra*, Texas Tech University
(100660159) 
10:00 a.m.
A Review of Recent Advances in the Mathematical Treatment of Image Analysis Problems, with Examples from Biomedical Image Analysis.
Hilary W Thompson*, Louisiana State University Eye Center , Neuroscience, Medicine, and Biostatistics
(100662251) 
10:30 a.m.
Translation Multiresolution Analyses and its application in Image processing.
Josip Derado*, Kennesaw State Uiversity
(100642261) 
11:00 a.m.
Nonparametric Density Estimation on Homogeneous Spaces in High Level Image Analysis.
Robert L Paige*, Texas Tech University
Frits Ruymgaart, Texas Tech University
Vic Patrangenaru, Texas Tech University
Jeff Lee, Texas Tech University
(100662228)

8:30 a.m.

Saturday April 9, 2005, 8:30 a.m.10:55 a.m.
Special Session on Undergraduate and Graduate Student Research (and Related Poster Session organized by Ali Khoujmane and Mara D. Neusel, Texas Tech), II
Room 015, Mathematics and Statistics Building
Organizers:
Ali Khoujmane, Texas Tech University akhoujma@math.ttu.edu
Edward W. Swim, Texas Tech University eswim@math.ttu.edu
Edward J. Allen, Texas Tech University eallen@math.ttu.edu
Padmanabhan Seshaiyer, Texas Tech University padhu@math.ttu.edu

8:30 a.m.
An Investigation of Climatic and Geographic Factors on the Growth and Spread of Chytrid Fungus on Amphibian Populations in Australia.
Amy J. Drew*, Texas Tech University
Edward J. Allen, Texas Tech University
Linda J. S. Allen, Texas Tech University
(100692148) 
9:00 a.m.
Deterministic Modeling of the Effect of Reservoir Hosts on the Spread of Chytrid Fungus within the Barred Tiger Salamander Population.
Jody Zuehlke*, Tarelton State University
Keith E. Emmert, Tarleton State University
(10069299) 
9:30 a.m.
DiscreteTime, Stage Structured Model for Equine Protozoal Myloencephalitus.
Amy Riordan*, Tarleton State University
Keith E Emmert, Tarleton State University
(10069297) 
10:00 a.m.
An Analysis of Clattering Impacts of a Falling Rod.
Florin Vasile Badiu*, Department of Mathematics, University of Texas at Arlington
Jianzjong Su, Department of Mathematics, University of Texas at Arlington
Hua Shan, Department of Mathematics, University of Texas at Arlington
(10067011) 
10:30 a.m.
Nonstandard Numerical Methods with Applications to PredatorPrey Models.
Dobromir T Dimitrov*, University of Texas  Arlington, Department of Mathematics
(10066527)

8:30 a.m.

Saturday April 9, 2005, 8:30 a.m.11:20 a.m.
Special Session on Partial Differential Equation and Its Application in Biomedical Study, II
Room 109, Mass Communications Building
Organizers:
Jay R. Walton, Texas A&M University jwalton@math.tamu.edu
Padmanabhan Seshaiyer, Texas Tech University padhu@koch.math.ttu.edu
Akif Ibragimov, Texas Tech University akifibragimov@yahoo.com

8:30 a.m.
Constitutive Restrictions for Isotropic Hyperelastic Material Modeled Using Invariants of Logarithmic Strain.
T. Sendova*, Department of Mathematics, Texas A&M University
J. R. Walton, Department of Mathematics, Texas A&M University
(100674191) 
9:00 a.m.
Effects of Diffusion and Stimuli on Bifurcating Rotating Waves In Excitable Media.
John Alford Alford*, Tulane University
(100692205) 
9:30 a.m.
A Nonlinear Incompressible Elastic Mathematical Model of the Human Tongue.
Caroline EssexTorcaso, Inst. for Systems Research, Univ. of Maryland, College Park
William S Levine*, Dept. of ECE, Univ. of Maryland, College Park
(10069238) 
10:00 a.m.
A model of blood flow in compliant arteries: modeling, analysis, simulation and experimental verification.
Suncica Canic*, University of Houston
(100635184) 
11:00 a.m.
Stability Analyzes for Chemotaxic Models, and Application.
Akif Ibragiomv*, Texas Tech University
Laura Ritter, Texs A&M College Station
Jay Walton, Texs A&M College Station
(100635120)

8:30 a.m.

Saturday April 9, 2005, 8:30 a.m.11:20 a.m.
Special Session on Topology of Continua, II
Room 110, Mathematics and Statistics Building
Organizers:
Wayne Lewis, Texas Tech University wlewis@math.ttu.edu

8:30 a.m.
Continuous Extensions of Partial Metrics.
E. D. Tymchatyn*, University of Saskatchewan
K. Kawamura, University of Tsukuba
A. Zagorodnyuk, University of Saskatchewan
(100654114) 
9:00 a.m.
Progress on the fixed point property for simple triodlike continua.
Christopher G. Mouron*, Rhodes College
(100654165) 
9:30 a.m.
When $P$likeness implies $Q$likeness for indecomposable continua.
Udayan B Darji*, University of Louisville
(100654157) 
10:00 a.m.
Comparing the Symmetric Spans of a Disc and Its Boundary.
Thelma R West*, University of Louisiana at Lafayette
(100654156) 
10:30 a.m.
Metrically Connected Spaces.
B. Dale Daniel*, Lamar University
(10065479) 
11:00 a.m.
Discussion

8:30 a.m.

Saturday April 9, 2005, 8:30 a.m.11:25 a.m.
Special Session on Differential Geometry and Its Applications, II
Room 108, Mathematics and Statistics Building
Organizers:
Josef F. Dorfmeister, Munich University of Technology dorfm@mathematik.tumuenchen.de
Magdalena D. Toda, Texas Tech University mtoda@math.ttu.edu
Hongyou Wu, Northern Illinois University wu@math.niu.edu

8:30 a.m.
Complex ODE's and Surfaces of Constant Mean Curvature.
Josef F. Dorfmeister*, Zentrum Mathematik, TUMuenchen and Department of Mathematics, University of Augsburg
Shimpei Kobayashi, Kobe University, Japan
(100658111) 
9:30 a.m.
The Geometry of Harmonic maps into Special Linear Groups.
Magdalena Daniela Toda*, Texas Tech University
(10065390) 
10:00 a.m.
CMC surfaces in Finsler spaces.
Vladimir Balan*, University POLITEHNICA of Bucharest, ROMANIA
(100653107) 
10:30 a.m.
The $1/\kappa$ flow and related geometric evolution equations for curves.
Thomas A. Ivey*, College of Charleston
(100653113) 
11:00 a.m.
Rendering Costa's Minimal Surface with Mathematica and 3D Printer Technology.
M. Melko*, Northern State University
(10065388)

8:30 a.m.

Saturday April 9, 2005, 8:30 a.m.11:15 a.m.
Special Session on Classical and Differential Galois Theory, II
Room 114, Mathematics and Statistics Building
Organizers:
Lourdes Juan, Texas Tech University ljuan@koch.math.ttu.edu
Arne Ledet, Texas Tech University aledet@math.ttu.edu
Andy R. Magid, University of Oklahoma amagid@ou.edu

8:30 a.m.
Essential dimension.
Arne Ledet*, Texas Tech University
(100612171) 
9:00 a.m.
Differential Galois Theory of Second Order Polynomial System.
Jinzhi Lei*, Zhou PeiYuan Center for Applied Mathematics, Tsinghua University
(100634123) 
9:30 a.m.
Comparing cusps on modular curves to their Modular Tower generalization.
Michael D Fried*, MSUBillings, UC Irvine
(10061125) 
10:00 a.m.
Groups as Differential Galois Groups.
Julia Hartmann*, IWR, Univeristy of Heidelberg
(100612231) 
10:30 a.m.
Integral and Iterative Differential Modules.
B. Heinrich Matzat*, University of Heidelberg
(100612264)

8:30 a.m.

Saturday April 9, 2005, 8:30 a.m.11:20 a.m.
Special Session on Topology of Dynamical Systems, II
Room 109, Mathematics and Statistics Building
Organizers:
Brian Raines, Baylor University Brian_Raines@baylor.edu

8:30 a.m.
Discussion 
9:00 a.m.
Discussion 
9:30 a.m.
Pitchfork Bifurcations of Invariant Manifolds.
Jyoti Champanerkar*, William Paterson University
Denis Blackmore, New Jersey Institute of Technology
(10063724) 
10:00 a.m.
Hedgehogs are in the limit set of a recurrent critical point.
Doug Childers*, University of Alabama at Birmingham
(100637115) 
10:30 a.m.
Siegel and Cremer building blocks for polynomial Julia sets.
John C Mayer*, University of Alabama at Birmingham
(100630196) 
11:00 a.m.
Wandering dgons in laminations.
Lex G. Oversteegen*, UAB
Alexander Blokh, UAB
(100637173)

8:30 a.m.

Saturday April 9, 2005, 8:30 a.m.11:20 a.m.
Special Session on Invariants of Links and 3Manifolds, I
Room 111, Mathematics and Statistics Building
Organizers:
Mieczyslaw Krzysztof Dabkowski, University of Texas at Dallas mdab@utdallas.edu
Razvan Gelca, Texas Tech University rgelca@math.ttu.edu
Jozef Henryk Przytycki, George Washington University przytyck@gwu.edu

8:30 a.m.
On The Frohman KaniaBartoszynska ideal.
Patrick M Gilmer*, Louisiana State University
(10065751) 
9:00 a.m.
Integral bases for the $SU(2)$TQFTmodules in genus one.
Khaled Moham Qazaqzeh*, Baton Rouge/Louisiana
(10065763) 
9:30 a.m.
Applications of Vassiliev invariants to the classification of pseudoLegendrian knots.
Vladimir V. Chernov*, Dartmouth College
(100657193) 
10:00 a.m.
On $n$punctured ball tangles.
JaeWook Chung*, University of California, Riverside
XiaoSong Lin, University of California, Riverside
(100657175) 
10:30 a.m.
Higher Hochschild homology of a Heegaard splitting.
Michael McLendon*, Washington College
(100657201) 
11:00 a.m.
TuraevViro invariant and the Reidemeister torsion.
Charles Frohman, University of Iowa
Joanna KaniaBartoszynska*, Boise State University/ National Science Foundation
(100657232)

8:30 a.m.

Saturday April 9, 2005, 8:30 a.m.10:50 a.m.
Special Session on Theory and Application of Stochastic Differential Equations, II
Room 121, Mass Communications Building
Organizers:
Edward J. Allen, Texas Tech University eallen@math.ttu.edu
Armando Arciniega, University of Texas at San Antonio aarciniega@utsa.edu

8:30 a.m.
$L^p$convergence of Waveform Relaxation Methods for Numerical Integration of Stochastic Differential Equations.
Henri Schurz*, Southern Illinois University at Carbondale
(100660252) 
9:00 a.m.
A threefield finite element method for elliptic partial differential equations driven by stochastic loads.
Scott R. Franklin*, Wayland Baptist University
Philip W. Smith, Texas Tech University
Padmanabhan Seshaiyer, Texas Tech University
(10066087) 
9:30 a.m.
Reflected Stochastic IntegroDifferential Equations in Convex Regions.
Janusz S Golec*, Fordham University
(100660234) 
10:00 a.m.
Stochastic Point Kinetics Equations in Nuclear Reactor Dynamics.
James G Hayes*, Texas Tech University
Edward J Allen, Texas Tech University
(10066009) 
10:30 a.m.
Extrapolation for Stochastic Theta Numerical Methods.
Rachel C. Koskodan*, Texas Tech University
(10066055)

8:30 a.m.

Saturday April 9, 2005, 8:50 a.m.11:20 a.m.
Special Session on Real Algebraic Geometry, II
Room 010, Mathematics and Statistics Building
Organizers:
Anatoly Korchagin, Texas Tech University korchag@math.ttu.edu
David Weinberg, Texas Tech University weinberg@math.ttu.edu

8:50 a.m.
Experimentation and conjectures in the real Schubert calculus for flag manifolds.
James V Ruffo*, Texas A&M University
Yuval Sivan, University of Massachusetts at Amherst
Evgenia Soprunova, University of Massachusetts at Amherst
Frank Sottile, Texas A&M University
(100614197) 
9:30 a.m.
Efficient algorithms for computing the Betti numbers of semialgebraic sets.
Saugata Basu*, School of Mathematics, Georgia Tech
(100655153) 
10:10 a.m.
Real pencils of cubics applied to solve an interpolation problem.
Severine C.M. Fiedler*, Toulouse , France
(100614209) 
10:50 a.m.
On arrangements of a plane quintic $M$curve with respect to a pair of lines.
Anatoly B. Korchagin*, Texas Tech University
(100614195)

8:50 a.m.

Saturday April 9, 2005, 9:00 a.m.10:50 a.m.
Special Session on Extinction, Periodicity, and Chaos in Population and Epidemic Models, II
Room 110, Mass Communications Building
Organizers:
Linda J. S. Allen, Texas Tech University lallen@math.ttu.edu
Sophia RueyJen Jang, University of Louisiana at Lafayette jang@louisiana.edu
LihIng W. Roeger, Texas Tech University lroeger@math.ttu.edu

9:00 a.m.
A paradox of horizontal and vertical disease transmission.
S. H. Faeth, School of Life Sciences, Arizona State University
K. P. Hadeler, Department of Mathematics and Statistics, Arizona State University
Horst R. Thieme*, Department of Mathematics and Statistics, Arizona State University
(100692112) 
9:30 a.m.
Discretetime Epidemic Models.
AbdulAziz Yakubu*, Howard University
(100692155) 
10:00 a.m.
A Stoichiometric Discrete PredatorPrey Model: Chaos and Its Implications.
Yang Kuang*, Arizona State University
(100692189) 
10:30 a.m.
Enrichment Thresholds for Growth and Predation.
Mary M Ballyk*, New Mexico State University
Gail S.K. Wolkowicz, McMaster University
(100692164)

9:00 a.m.

Saturday April 9, 2005, 9:00 a.m.11:20 a.m.
Special Session on Discrete Groups, Homogeneous Spaces, Rigidity, II
Room 014, Mathematics and Statistics Building
Organizers:
Alex Gorodnik, University of Michigan,Ann Arbor gorodnik@umich.edu
Hee Oh, California Institute of Technology heeoh@its.caltech.edu
Nicolas Monod, University of Chicago monod@math.uchicago.edu

9:00 a.m.
Measurable rigidity for group actions on infinite volume homogeneous spaces.
Alex Furman*, University of Illinois at Chicago (UIC)
(10063789) 
10:00 a.m.
Free subgroups of linear groups.
T Gelander*, Yale
E Breuillard, CNRS
(10062291) 
11:00 a.m.
Minimal volume entropy on trees.
Seonhee Lim*, Yale university/ENSParis
(100637147)

9:00 a.m.

Saturday April 9, 2005, 9:00 a.m.11:20 a.m.
Special Session on Homological Algebra and Its Applications, II
Room 112, Mathematics and Statistics Building
Organizers:
Alex Martsinkovsky, Northeastern University alexmart@neu.edu
Mara D. Neusel, Texas Tech University mneusel@math.ttu.edu

9:00 a.m.
Flat dimensions under base changes.
HansBj{\o}rn Foxby*, University of Copenhagen
(100616124) 
9:30 a.m.
Gorenstein dimension of modules finite over homomorphisms.
Lars Winther Christensen*, University of NebraskaLincoln
Srikanth Iyengar, University of NebraskaLincoln
(100613133) 
10:00 a.m.
Remarks on balance in generalized Tate cohomology.
Alina C Iacob*, Department of Mathematics, University of Kentucky
(10061818) 
10:30 a.m.
The finiteness and structure of the set of semidualizing modules.
Sean M. SatherWagstaff*, University of NebraskaLincoln
(10061372) 
11:00 a.m.
A generalization of the Euler characteristic to modules of finite Gdimension.
Sean SatherWagstaff, University of Nebraska
Diana White*, University of Nebraska
(10061377)

9:00 a.m.

Saturday April 9, 2005, 11:40 a.m.12:30 p.m.
Invited Address
Diophantine problems and group actions.
Biology Lecture Hall 100, Biology Building
Hee Oh*, California Institute of Technology 
Saturday April 9, 2005, 2:00 p.m.2:50 p.m.
Invited Address
Mapping class groups of surfaces and complexes of curves.
Biology Lecture Hall 100, Biology Building
Nikolai V. Ivanov*, Michigan State University
(100657150) 
Saturday April 9, 2005, 3:00 p.m.4:50 p.m.
Special Session on Extinction, Periodicity, and Chaos in Population and Epidemic Models, III
Room 110, Mass Communications Building
Organizers:
Linda J. S. Allen, Texas Tech University lallen@math.ttu.edu
Sophia RueyJen Jang, University of Louisiana at Lafayette jang@louisiana.edu
LihIng W. Roeger, Texas Tech University lroeger@math.ttu.edu

3:00 p.m.
A Mathematical Model of Gene Transfer in a Biofilm.
Hal L. Smith*, arizona State university
Don Jones, arizona State university
Mudassar Imran, arizona state university
(10069253) 
3:30 p.m.
Rate disribution and survival of the fittest: A formulation on the space of measures.
Azmy S. Ackleh*, University of Louisiana at Lafayette
Ben G. Fitzpatrick, Loyola Marymount University
Horst Thieme, Arizona State University
(100692198) 
4:00 p.m.
Dynamics of TwoStrain Influenza with Isolation and Partial CrossImmunity.
Zhilan Feng*, Purdue University
Miriam Nuno, Cornell University
Maia Martcheva, University of Florida
Carlos CastilloChavez, Arizona State University
(100692105) 
4:30 p.m.
Disease Emergence in Multihost Epidemic Models.
Robert K McCormack*, Texas Tech University
Linda J. S. Allen, Texas Tech University
(10069247)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:50 p.m.
Special Session on Future Directions in Mathematical Systems and Control Theory, III
Room 108, Mass Communications Building
Organizers:
David Gilliam, Texas Tech University gilliam@math.ttu.edu
W. P. Dayawansa, Texas Tech University wdayawansa@yahoo.com

3:00 p.m.
A neuromuscularelstoddynamic model of the human arm.
Lawrence Schovanec*, Department of Mathematics and Statistics, Texas Tech University
Alan Barhorst, Department of Mechanical Engineering, Texas Tech University
(10069392) 
3:30 p.m.
Systems Modeling in Computational Biology.
Xiuxia Du, Washington University in St. Louis
Bijoy Ghosh*, Washington University
(10069337) 
4:00 p.m.
StateShared Model for MultipleInput MultipleOutput Systems.
Zhenhua Tian*, Texas Tech University
Karlene A Hoo, Texas Tech University
(10069350) 
4:30 p.m.
Vankatype solvers for steady Stokes and NavierStokes optimality systems.
Sandro Manservisi*, Texas Tech University
(10064960)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:50 p.m.
Special Session on Graph Theory, II
Room 013, Mathematics and Statistics Building
Organizers:
John C. George, Eastern New Mexico University John.George@enmu.edu
Walter D. Wallis, Southern Illinois University at Carbondale wdwallis@math.siu.edu

3:00 p.m.
Neighborhood antiSperner Graphs.
John P McSorley*, Southern Illinois University at Carbondale.
(10060594) 
3:30 p.m.
Symmetries that Latin Squares Inherit from 1Factorisations.
Ian M. Wanless, Department of Computer Science, Australian National University
Edwin C. Ihrig*, Department of Mathematics and Statistics, Arizona State University
(100605106) 
4:00 p.m.
Properties of closed neighborhood antiSperner graphs.
Alison M. Marr*, Southern Illinois University
John P. McSorley, Southern Illinois University
Thomas D. Porter, Southern Illinois University
W. D. Wallis, Southern Illinois University
(100605246) 
4:30 p.m.
Progress on the orientable genus of joins of complete and edgeless graphs.
Mark Ellingham*, Department of Mathematics, Vanderbilt Universiity
Chris Stephens, Department of Mathematical Sciences, Middle Tennessee State University
(10060530)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:50 p.m.
Special Session on Statistical Image Processing and Analysis and Applications, III
Room 012, Mathematics and Statistics Building
Organizers:
Victor Patrangenaru, Texas Tech University vpatrang@math.ttu.edu

3:00 p.m.
Statistical Analysis of Shapes of Planar Closed Curves.
Anuj Srivastava*, Florida State University
David Kaziska, Florida State University
Shantanu Joshi, Florida State University
(100662263) 
3:30 p.m.
On the Analysis of Shapes and Images.
Ajoy Roy*, Indian Institute of Technology
Rabindra N Bhattacharya, University of Arizona
(100662260) 
4:00 p.m.
On the computation of selfmotion for an unmanned air vehicle from image sequences without depth information.
Ram V Iyer*, Dept. of Mathematics and Statistics, Texas Tech University
Raymond W Holsapple, Dept. of Mathematics and Statistics, Texas Tech University
Phillip Chandler, AFRL/VACA Air Vehicles Directorate
(100678190) 
4:30 p.m.
A statistical method for Glaucoma detection using tomographic images.
Ananda Bandulasiri*, Texas Tech University
Victor Patrangenaru, Texas Tech University
Hilary Thompson, Louisiana state university , eye center
(100662250)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:45 p.m.
Special Session on Undergraduate and Graduate Student Research (and Related Poster Session organized by Ali Khoujmane and Mara D. Neusel, Texas Tech), III
Room 015, Mathematics and Statistics Building
Organizers:
Ali Khoujmane, Texas Tech University akhoujma@math.ttu.edu
Edward W. Swim, Texas Tech University eswim@math.ttu.edu
Edward J. Allen, Texas Tech University eallen@math.ttu.edu
Padmanabhan Seshaiyer, Texas Tech University padhu@math.ttu.edu

3:00 p.m.
Faculty Panel 
4:00 p.m.
Poster Session for Undergraduates and Graduates (Room 017)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:45 p.m.
Special Session on Discrete Groups, Homogeneous Spaces, Rigidity, III
Room 014, Mathematics and Statistics Building
Organizers:
Alex Gorodnik, University of Michigan,Ann Arbor gorodnik@umich.edu
Hee Oh, California Institute of Technology heeoh@its.caltech.edu
Nicolas Monod, University of Chicago monod@math.uchicago.edu

3:00 p.m.
Some arithmetic groups that cannot act on the line.
Lucy Lifschitz, University of Oklahoma
Dave Witte Morris*, University of Lethbridge
(10062041) 
4:00 p.m.
Constructing diffeomorphisms to negatively curved manifolds.
Chris Connell*, Indiana University
(100653116)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:45 p.m.
Special Session on Partial Differential Equation and Its Application in Biomedical Study, III
Room 109, Mass Communications Building
Organizers:
Jay R. Walton, Texas A&M University jwalton@math.tamu.edu
Padmanabhan Seshaiyer, Texas Tech University padhu@koch.math.ttu.edu
Akif Ibragimov, Texas Tech University akifibragimov@yahoo.com

3:00 p.m.
Computations of MultiScale Models of Cancer Tumor Invasion.
Bruce P Ayati*, Southern Methodist University
Glenn F. Webb, Vanderbilt University
(100692139) 
4:00 p.m.
A Mathematical Model of Atherogenesis as an Inflammatory Response.
A I Ibragimov, Dept. of Mathematics Texas Tech University
C J McNeal, Dept. of Internal Medicine, Div. of Cardiology, Dept. of Pediatrics, Div. of Endocrinology, Scott & White
L R Ritter*, Dept. of Mathematics Texas A & M University
J R Walton, Dept. of Mathematics Texas A & M University
(10063506)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:50 p.m.
Special Session on Topology of Continua, III
Room 110, Mathematics and Statistics Building
Organizers:
Wayne Lewis, Texas Tech University wlewis@math.ttu.edu

3:00 p.m.
A Discussion of the Smallpoint Hyperspaces of Simple $n$ods.
Eric L McDowell*, Berry College
(100654167) 
3:30 p.m.
A new construction of simply connected noncontractible celllike continua.
Du\v{s}an Repov\v{s}*, Institute for Mathematics, Physics and Mechanics, University of Ljubljana
(10065407) 
4:00 p.m.
Uniqueness of nfold hyperspaces of a compactification of a ray.
Veronica MartinezdelaVega*, Universidad Nacional Autonoma de Mexico
(100654214) 
4:30 p.m.
On 2equivalent continua.
Carlos Islas*, Fac. de Ciencias UNAM
(100654216)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:55 p.m.
Special Session on Differential Geometry and Its Applications, III
Room 108, Mathematics and Statistics Building
Organizers:
Josef F. Dorfmeister, Munich University of Technology dorfm@mathematik.tumuenchen.de
Magdalena D. Toda, Texas Tech University mtoda@math.ttu.edu
Hongyou Wu, Northern Illinois University wu@math.niu.edu

3:00 p.m.
The BianchiBaecklund Transformation for Constant Mean Curvature Surfaces.
Henry C. Wente*, University of Toledo
Andraia Mahler, ToledoOhio
(10065320) 
4:00 p.m.
New and Old Applications of BianchiB\"acklund Transformations.
Andreia F. MahlerBeilis*, Internet Payment Exchange, Inc. Toledo, Ohio
(10065321) 
4:30 p.m.
Backlund transformations for Weigarten surfaces.
Hongyou Wu*, Northern Illinois University
(100653149)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:45 p.m.
Special Session on Classical and Differential Galois Theory, III
Room 114, Mathematics and Statistics Building
Organizers:
Lourdes Juan, Texas Tech University ljuan@koch.math.ttu.edu
Arne Ledet, Texas Tech University aledet@math.ttu.edu
Andy R. Magid, University of Oklahoma amagid@ou.edu

3:00 p.m.
On vectorial polynomial and coverings in characteristic 3.
Teresa Crespo*, Universitat de Barcelona
Zbigniew Hajto, University of Cracow
(100612245) 
3:30 p.m.
Galois embedding problems and symmetric powers.
Zbigniew Hajto*, Cracow (Poland)
Teresa Crespo, University of Barcelona
(100612204) 
4:00 p.m.
Hurwitz spaces, patching and profinite inverse Galois theory.
Pierre Debes*, Universite Lille 1
Michel Emsalem, Université Lille 1
(10061275)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:50 p.m.
Special Session on Homological Algebra and Its Applications, III
Room 112, Mathematics and Statistics Building
Organizers:
Alex Martsinkovsky, Northeastern University alexmart@neu.edu
Mara D. Neusel, Texas Tech University mneusel@math.ttu.edu

3:00 p.m.
Additive and multiplicative $Q$ring operations on $H_*BO_*$.
Terrence P. Bisson*, Canisius College
Andr\'e Joyal, UQAM (Universite du Quebec a Montreal)
(100655160) 
3:30 p.m.
Discussion 
4:00 p.m.
Discussion 
4:30 p.m.
Primary Decomposition for Algebras with a Hopf algebra action.
Mara D Neusel*, Texas Tech University
(100613188)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:50 p.m.
Special Session on Recent Advances in Complex Function Theory, III
Room 011, Mathematics and Statistics Building
Organizers:
Brock Williams, Texas Tech University williams@math.ttu.edu
Roger W. Barnard, Texas Tech University barnard@math.ttu.edu
Kent Pearce, Texas Tech University pearce@math.ttu.edu

3:00 p.m.
A Sharp Bound on the Schwarzian Derivatives of Hyperbolically Convex Functions.
Leah J Cole*, Wayland Baptist University
Roger W Barnard, Texas Tech University
Kent Pearce, Texas Tech University
G Brock Williams, Texas Tech University
(100630226) 
3:30 p.m.
A Schwarzian derivative criterion for univalence of harmonic mappings.
Peter Duren*, University of Michigan
Martin Chuaqui, P. Universidad Cat\'olica de Chile
Brad Osgood, Stanford University
(10063093) 
4:00 p.m.
Geometric Properties of a class of nonconvex harmonic maps.
Jane M McDougall*, Colorado College
Lisbeth Schaubroeck, United States Air Force Academy
(100630248) 
4:30 p.m.
New and old results on the coefficients of classes of harmonic univalent functions.
Jay M Jahangiri*, Kent State University
Herb Silverman, College of Charleston
Evelyn M Silvia, University of California at Davis
(10063010)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:50 p.m.
Special Session on Real Algebraic Geometry, III
Room 010, Mathematics and Statistics Building
Organizers:
Anatoly Korchagin, Texas Tech University korchag@math.ttu.edu
David Weinberg, Texas Tech University weinberg@math.ttu.edu

3:00 p.m.
On the $RO(\mathbb{Z}/2)$graded equivariant cohomology of geometrically cellular real varieties.
Paulo LimaFilho*, Texas A&M University
Pedro F. dos Santos, Instituto Superior Tecnico
(100614244) 
3:40 p.m.
Bounds and Algorithms for Real Polynomials Supported on Circuits.
J. Maurice Rojas*, Texas A&M University, Department of Mathematics
(100614221) 
4:20 p.m.
Extension of P\'olya's theorem to signomials with rational exponents.
Charles N. Delzell*, Louisiana State University
(100614225)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:20 p.m.
Special Session on Topology of Dynamical Systems, III
Room 109, Mathematics and Statistics Building
Organizers:
Brian Raines, Baylor University Brian_Raines@baylor.edu

3:00 p.m.
Adding Machines in the Tent Family of Maps.
Louis Block, University of Florida
James Keesling*, University of Florida
Michal Misiurewicz, Indiana UnivPurdue Univ Indianapolis
(100613194) 
3:30 p.m.
Topological classification of inverse limit spaces of tent maps with finite critical orbit.
Sonja \v{S}timac*, Graduate School of Economics and Business, University of Zagreb
(100637131) 
4:00 p.m.
Asymptotic arccomposants in unimodal inverse limit spaces.
Henk Bruin*, University of Surrey
(100637137)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:50 p.m.
Special Session on Invariants of Links and 3Manifolds, II
Room 111, Mathematics and Statistics Building
Organizers:
Mieczyslaw Krzysztof Dabkowski, University of Texas at Dallas mdab@utdallas.edu
Razvan Gelca, Texas Tech University rgelca@math.ttu.edu
Jozef Henryk Przytycki, George Washington University przytyck@gwu.edu

3:00 p.m.
Tangles and Virtual Tangles.
Louis H. Kauffman*, University of Illinois at Chicago
Sofia Lambropoulou, National Technical University of Athens
(100657104) 
3:30 p.m.
Nonadditive versions of the Hennings (KRH) invariant.
Fernando J. O. Souza*, University of Iowa
(100657262) 
4:00 p.m.
Skein Theory and String Topology.
Nikolaos E. Apostolakis, Boise State University
Uwe Kaiser*, Boise State University
(100657176) 
4:30 p.m.
Applications of quandle cocycle invariants to knots and graphs.
Masahico Saito*, University of South Florida
(100657163)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:50 p.m.
Special Session on Theory and Application of Stochastic Differential Equations, III
Room 121, Mass Communications Building
Organizers:
Edward J. Allen, Texas Tech University eallen@math.ttu.edu
Armando Arciniega, University of Texas at San Antonio aarciniega@utsa.edu

3:00 p.m.
Approximation for a stochastic logistic equation.
Brian Dennis*, Department of Statistics/Universty of Idaho
(10069286) 
3:30 p.m.
Numerical Study of Interacting Particle Approximations for IntegroDifferential Equations.
Dan Stanescu*, University of Wyoming
(100665177) 
4:00 p.m.
Noise sustained wave propagation and its application to mathematical neurosciences.
Mahbubur Rahman*, UC Davis
(10069284) 
4:30 p.m.
Rounding Error In Numerical Solution of Stochastic Differential Equations.
Armando Arciniega*, The University of Texas at San Antonio
Edward J. Allen, Texas Tech University
(10066526)

3:00 p.m.

Saturday April 9, 2005, 3:00 p.m.4:55 p.m.
Session for Contributed Papers
Room 016, Mathematics and Statistics Building

3:00 p.m.
Maximizing Functionals Over a Class of Hyperbolically Convex Functions.
Roger Barnard, Texas Tech University
David R. Martin*, Texas Tech University
G. Brock Williams, Texas Tech University
(100630255) 
3:15 p.m.
Mapping of Radial Slit Domains and the Fundamental Frequency of a Drum.
Philip R Brown*, Texas A&M University at Galveston
(10063073) 
3:30 p.m.
On Fractional Fourier transform on Hovell's space.
Bharat N. Bhosale*, University of Mumbai
(10064408) 
3:45 p.m.
Application of the H\'ajek LeCam Convolution Theorem.
EunJoo Lee*, Illinois College
Frits Ruymgaart, Texas Tech University
(10066222) 
4:00 p.m.
Checking the Censored TwoSample Accelerated Life Model using Integrated Cumulative Hazard Difference.
SeungHwan Lee*, Illinois Wesleyan University
Song Yang, NIH
(10066223) 
4:15 p.m.
High Order Polynomialbased Quadratures on Two Dimensional Structures.
Hong Xiao*, University of California at Davis
(100665242) 
4:30 p.m.
The use of measures of disarray for comparing sorting algorithms with erroneous comparisons.
Petros Hadjicostas*, Texas Tech University
(100605203) 
4:45 p.m.
Energy and Flows on 3manifolds.
A Fawaz*, The University of Texas of the Permian Basin
(10065329)

3:00 p.m.

Saturday April 9, 2005, 4:00 p.m.5:00 p.m.
Poster Session for Undergraduate and Graduate Students
This is associated with the Session on Undergraduate and Graduate Student Research
Room 017, Mathematics and Statistics Building
Organizers:
Ali Khoujmane, Texas Tech University
Mara D. Neusel, Texas Tech University 
Saturday April 9, 2005, 5:10 p.m.6:00 p.m.
Invited Address
Singularities and complex dynamics.
Biology Lecture Hall 100, Biology Building
Mattias Jonsson*, University of Michigan
(10060004)
Sunday April 10, 2005

Sunday April 10, 2005, 8:00 a.m.10:50 a.m.
Special Session on Recent Advances in Complex Function Theory, IV
Room 011, Mathematics and Statistics Building
Organizers:
Brock Williams, Texas Tech University williams@math.ttu.edu
Roger W. Barnard, Texas Tech University barnard@math.ttu.edu
Kent Pearce, Texas Tech University pearce@math.ttu.edu

8:00 a.m.
Weighted distortion in conformal mapping in euclidean, hyperbolic and elliptic geometry.
Daniela Kraus, Department of Mathematics, University of Würzburg, Germany
Oliver Roth*, Department of Mathematics, University of Würzburg, Germany
(100630125) 
8:30 a.m.
Geodesics and curvature of a M\"obius invariant metric.
Zair Ibragimov*, University of Cincinnati
David Herron, University of Cincinnati
David Minda, University of Cincinnati
(10063017) 
9:00 a.m.
A Variational Method for Hyperbolically Convex Functions.
Roger W Barnard, Texas Tech University
G Lenny Ornas*, McNeese State University
Kent Pearce, Texas Tech University
(100630227) 
9:30 a.m.
Parametric representation and linear functionals associated with extension operators for biholomorphic mappings.
Ian Graham, University of Toronto
Gabriela Kohr, BabesBolyai University
John Pfaltzgraff*, University of North Carolina
(100632166) 
10:00 a.m.
Linear Invariant Families on the Ball, Extremal Problems and Invariant Mappings.
John A. Pfaltzgraff, UNC Chapel Hill
Ted J. Suffridge*, University of Kentucky
(100632211) 
10:30 a.m.
Minimal area problem for nonvanishing functions.
Clint Richardson*, Stephen F. Austin State University
Roger W. Barnard, Texas Tech University
Alex Yu. Solynin, Texas Tech University
(100630207)

8:00 a.m.

Sunday April 10, 2005, 8:30 a.m.9:50 a.m.
Special Session on Future Directions in Mathematical Systems and Control Theory, IV
Room 108, Mass Communications Building
Organizers:
David Gilliam, Texas Tech University gilliam@math.ttu.edu
W. P. Dayawansa, Texas Tech University wdayawansa@yahoo.com

8:30 a.m.
Java and Control Systems Simulations.
Channa N Navaratna*, Texas Tech University, Lubbock, TX 79413
(100693192) 
9:00 a.m.
AlmostGlobal Tracking of Simple Mechanical Systems on a General Class of Lie Groups.
Sanjeeva D. H. Maithripala*, Post Doctoral Research Associate/Texas Tech University
Jordan M Berg, Professor/Texas Tech University
Wijesuriya P Dayawansa, Professor/Texas Tech University
(100693185) 
9:30 a.m.
Generating Stable Travelling Pulses in Mems Arrays.
Rathnamalee Palamakumbura, Department of Mathematics and Statistics, Texas Tech University
Sanjeewa Maithripala, Department of Mechanical Engineering, Texas Tech University
Wijesuriua Dayawansa*, Department of Mathematics and Statistics, Texas Tech University
(10069357)

8:30 a.m.

Sunday April 10, 2005, 8:30 a.m.11:20 a.m.
Special Session on Topology of Continua, IV
Room 110, Mathematics and Statistics Building
Organizers:
Wayne Lewis, Texas Tech University wlewis@math.ttu.edu

8:30 a.m.
Metrics on Hyperspaces  Intuition and Theory.
Wlodzimierz J. Charatonik*, University of MissouriRolla
Matt Insall, University of MissouriRolla
(100654218) 
9:00 a.m.
Compactifications of $[0,\infty )$ are $F_{n}$determined if n is different from 3.
Jorge M MartinezMontejano*, Instituto de Matematicas, UNAM
(100654238) 
9:30 a.m.
Representation of the Composant Equivalence Relation for Indecomposable Continua.
David J Ryden*, Baylor University
(100654247) 
10:00 a.m.
Equidistant sets of boundary components for connected open sets in the complex sphere.
Jan Aarts, Technical University Delft, The Netherlands
Gaston Brouwer*, University of Alabama at Birmingham (UAB)
Lex Oversteegen, University of Alabama at Birmingham (UAB)
(100654257) 
10:30 a.m.
Discussion 
11:00 a.m.
Discussion

8:30 a.m.

Sunday April 10, 2005, 8:30 a.m.11:25 a.m.
Special Session on Differential Geometry and Its Applications, IV
Room 108, Mathematics and Statistics Building
Organizers:
Josef F. Dorfmeister, Munich University of Technology dorfm@mathematik.tumuenchen.de
Magdalena D. Toda, Texas Tech University mtoda@math.ttu.edu
Hongyou Wu, Northern Illinois University wu@math.niu.edu

8:30 a.m.
Soliton solutions of the selfdual YangMills equation on $R^{2,2}$.
Bo Dai*, University of California, Irvine and Peking University
ChuuLian Terng, Department of Mathematics, University of California, Irvine
(100653140) 
9:30 a.m.
Harmonic maps from the plane to Lie groups and symmetric spaces.
Emma Carberry*, Massachusetts Institute of Technology
Ian McIntosh, University of York
Erxiao Wang, University of Texas at Austin
(100653119) 
10:00 a.m.
The Geometry of the Smallest Circle Enclosing a Finite Set of Points.
Lance D. Drager*, Texas Tech University, Department of Math and Stat.
Jeffery M. Lee, Texas Tech University, Dept. of Math and Stat.
Clyde F. Martin, Texas Tech University, Department of Math and Stat.
(100651186) 
10:30 a.m.
Witten deformation and index of Dirac operators.
Igor Prokhorenkov*, Texas Christian University
Ken Richardson, Texas Christian University
(10065813) 
11:00 a.m.
Discussion

8:30 a.m.

Sunday April 10, 2005, 8:30 a.m.11:15 a.m.
Special Session on Classical and Differential Galois Theory, IV
Room 114, Mathematics and Statistics Building
Organizers:
Lourdes Juan, Texas Tech University ljuan@koch.math.ttu.edu
Arne Ledet, Texas Tech University aledet@math.ttu.edu
Andy R. Magid, University of Oklahoma amagid@ou.edu

8:30 a.m.
Generic PicardVessiot extensions and generic equations.
Lourdes Juan*, Texas Tech University
Andy Magid, University of Oklahoma
(100612200) 
9:00 a.m.
Regular realizations of $p$groups.
John L. Hammond*, University of Texas at Austin
(100612141) 
9:30 a.m.
Cyclic Algebras over padic Curves.
David J Saltman*, University of Texas at Austin
(100616161) 
10:30 a.m.
Galois theory of parameterized differential equations and linear differential algebraic groups.
Phyllis J Cassidy, The City College of New York City
Michael F Singer*, North Carolina State university
(10061258)

8:30 a.m.

Sunday April 10, 2005, 8:30 a.m.11:20 a.m.
Special Session on Topology of Dynamical Systems, IV
Room 109, Mathematics and Statistics Building
Organizers:
Brian Raines, Baylor University Brian_Raines@baylor.edu

8:30 a.m.
Discussion 
9:00 a.m.
Discussion 
9:30 a.m.
The structure of $\mathbf{R}$actions.
Rolf Suabedissen*, University of Oxford, UK
(100654154) 
10:00 a.m.
Chainability and Hemmingsen's theorem.
Paul Bankston*, Marquette University
Brian Raines, Baylor University
Wim Ruitenburg, Marquette University
(10065470) 
10:30 a.m.
Siegel Disks Whose Boundaries Have Only Two Complementary Domains.
James T Rogers, Jr.*, Tulane University
(10063731) 
11:00 a.m.
Inverse limits applied to a Cashinadvance model from economics.
Judy A Kennedy*, University of Delaware
David R Stockman, University of Delaware
James A Yorke, University of Maryland
(100637129)

8:30 a.m.

Sunday April 10, 2005, 9:00 a.m.10:20 a.m.
Special Session on Extinction, Periodicity, and Chaos in Population and Epidemic Models, IV
Room 110, Mass Communications Building
Organizers:
Linda J. S. Allen, Texas Tech University lallen@math.ttu.edu
Sophia RueyJen Jang, University of Louisiana at Lafayette jang@louisiana.edu
LihIng W. Roeger, Texas Tech University lroeger@math.ttu.edu

9:00 a.m.
The impact of isolation on population growth and epidemic propagation.
Fabio Augusto Milner*, Department of Mathematics, Purdue University
Daniel Maxin, Department of MAthematics, Purdue University
(100692130) 
9:30 a.m.
A Discrete SISModel for a VectorTransmitted Disease.
K. W. Blayneh*, Florida A&M University
(100637224) 
10:00 a.m.
A class of nonstandard symplectic discretization methods for LotkaVolterra system.
LihIng Wu Roeger*, Texas Tech University
(10066554)

9:00 a.m.

Sunday April 10, 2005, 9:00 a.m.11:20 a.m.
Special Session on Discrete Groups, Homogeneous Spaces, Rigidity, IV
Room 014, Mathematics and Statistics Building
Organizers:
Alex Gorodnik, University of Michigan,Ann Arbor gorodnik@umich.edu
Hee Oh, California Institute of Technology heeoh@its.caltech.edu
Nicolas Monod, University of Chicago monod@math.uchicago.edu

9:00 a.m.
Asymptotic expenders and Ramanujan graphs.
Rostislav Grigorchuk*, Texas A&M University
(100620100) 
10:00 a.m.
Divergent torus orbits in homogeneous spaces of rational rank two.
Pralay Chatterjee*, Department of Maths, Rice University
Dave Witte Morris, Department of Mathematics and Computer Science, University of Lethbridge
(100600121) 
10:30 a.m.
Weakly hyperbolic actions of Kazhdan groups on tori.
Benjamin I Schmidt*, University of Michigan
(10063783) 
11:00 a.m.
Multiple mixing of noncommuting automorphisms.
Alexander Gorodnik*, California Institute of Technology
(100637118)

9:00 a.m.

Sunday April 10, 2005, 9:00 a.m.10:45 a.m.
Special Session on Partial Differential Equation and Its Application in Biomedical Study, IV
Room 109, Mass Communications Building
Organizers:
Jay R. Walton, Texas A&M University jwalton@math.tamu.edu
Padmanabhan Seshaiyer, Texas Tech University padhu@koch.math.ttu.edu
Akif Ibragimov, Texas Tech University akifibragimov@yahoo.com

9:00 a.m.
On the Existence of Traveling Wave Solutions for a ParabolicHyperbolic System Arising from a Size Dependent Population Model.
A I Ibragimov, Texas Tech University
J R Walton*, Texas A&M University
(100635128) 
10:00 a.m.
Simulation and Modeling in Bilogical Systems (Problem Descussion).
Akif Ibragimov*, Texas Tech University
(100692217)

9:00 a.m.

Sunday April 10, 2005, 9:00 a.m.11:20 a.m.
Special Session on Invariants of Links and 3Manifolds, III
Room 111, Mathematics and Statistics Building
Organizers:
Mieczyslaw Krzysztof Dabkowski, University of Texas at Dallas mdab@utdallas.edu
Razvan Gelca, Texas Tech University rgelca@math.ttu.edu
Jozef Henryk Przytycki, George Washington University przytyck@gwu.edu

9:00 a.m.
The Alexander polynomial and knot homologies.
Charles Frohman*, The University of Iowa
Oliver Dasbach, Louisiana State University
(100657172) 
9:30 a.m.
The Noncommutative Apolynomial of Torus Knots.
Kristen Sellke*, The University of Iowa
(100657170) 
10:00 a.m.
Notes on the Kauffman bracket skein module of handlebodies.
Fumikazu Nagasato*, Department of Mathematics, Tokyo Institute of Technology, Japan (From April, 1st)
(100651146) 
10:30 a.m.
Spanning Trees and Khovanov Homology.
Abhijit Champanerkar*, University of South Alabama
Ilya Kofman, Barnard College, Columbia University
Oleg Viro, Uppsala University
(100657117) 
11:00 a.m.
On Kauffman's spanning tree expansion of the Alexander Polynomial.
Oliver Dasbach*, LSU
Charles Frohman, University of Iowa
(100657256)

9:00 a.m.

Sunday April 10, 2005, 9:20 a.m.10:30 a.m.
Special Session on Real Algebraic Geometry, IV
Room 010, Mathematics and Statistics Building
Organizers:
Anatoly Korchagin, Texas Tech University korchag@math.ttu.edu
David Weinberg, Texas Tech University weinberg@math.ttu.edu

9:20 a.m.
Rigid isotopies of real $y$trinomial curves.
Victor I. Zvonilov*, Syktyvkar State University
(10061440) 
10:00 a.m.
The classification of $M$curves of bidegree $(d,3)$ with $d\geq 2$ on the torus.
Lina M. Williams*, Texas Tech University
Anatoly B. Korchagin, Texas Tech University
(100614213)

9:20 a.m.