AMS Sectional Meeting Program by Day
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