AMS Sectional Meeting Full Program
Current as of Saturday, April 21, 2007 00:32:16
2007 Spring Eastern Section Meeting
Hoboken, NJ, April 1415, 2007 (Saturday  Sunday)
Meeting #1026
Associate secretaries: Lesley M Sibner, AMS lsibner@duke.poly.edu
Saturday April 14, 2007

Saturday April 14, 2007, 7:30 a.m.4:30 p.m.
Meeting Registration
McLean, Lobby, McLean 
Saturday April 14, 2007, 7:30 a.m.4:30 p.m.
Exhibit and Book Sale
McLean, 104, McLean 
Saturday April 14, 2007, 8:00 a.m.10:50 a.m.
Special Session on Number Theory, I
Room 330, Edwin A. Stevens Building
Organizers:
Florian Luca, Universidad Nacional Aut\'onoma de M\'exico fluca@matmor.unam.mx
Allison M. Pacelli, Williams College allison.pacelli@williams.edu

8:00 a.m.
Integer points on families of elliptic curves.
Gary Walsh*, University of Ottawa Ottawa, Ontario, Canada
(10261132) 
8:30 a.m.
On the rank of elliptic curves.
Siman Wong*, University of Massachusetts, Amherst
(102611188) 
9:00 a.m.
Rank statistics for a family of elliptic curves over a function field.
Carl Pomerance*, Dartmouth College
Igor E. Shparlinski, Department of Computing, Macquarie University
(10261172) 
9:30 a.m.
Distribution of Modular Inverses and Multiples of Small Integers and the SatoTate Conjecture on Average.
Igor E. Shparlinski*, Macquarie University
(10261147) 
10:00 a.m.
Counting Balanced Polynomials over Finite Fields.
Thomas W. Cusick, SUNY Buffalo
Yuan Li, Alcorn State University
Pante Stanica*, Naval Postgraduate School
(10261243) 
10:30 a.m.
Splitting Fields for Characteristic Polynomials of Matrices with Entries in a Finite Field.
Eric Schmutz*, Drexel University
(10261113)

8:00 a.m.

Saturday April 14, 2007, 8:00 a.m.10:50 a.m.
Special Session on Graph Theory and Combinatorics, I
Room 212, Edwin A. Stevens Building
Organizers:
Daniel J. Gross, Seton Hall University grossdan@shu.edu
Nathan W. Kahl, Seton Hall University kahlnath@shu.edu
John T. Saccoman, Seton Hall University saccomjt@shu.edu
Charles L. Suffel, Stevens Institute of Technology csuffel@stevens.edu

8:00 a.m.
A Forbidden Subgraph Condition on the Complement of a Graph that Ensures Minimum Diameter.
L. William Kazmierczak*, Stevens Institute of Technology
Frank Boesch, Stevens Institute of Technology
Daniel Gross, Seton Hall University
Charles Suffel, Stevens Institute of Technology
(102605193) 
8:30 a.m.
Some new results on nonplanar deltawyedelta graphs.
A. Satyanarayana*, Stevens Institute of Technology
Uma Batchu, Stevens Institute of Technology
(102605172) 
9:00 a.m.
On the almostregularity of dense graphs with a maximum number of spanning trees.
Jose A. Rodriguez*, Computer Science Department Long Island UniversityBrooklyn Campus
(10260525) 
9:30 a.m.
Martin/Odlyzko/Wolfram  20 Years Later.
Klaus Sutner*, Computer Science Department, Carnegie Mellon University
(10266856) 
10:00 a.m.
Some Useful Techniques for Bounding Neighbor Connectivity in Abelian Cayley Graphs preliminary report.
Lynne L. Doty*, Marist College
(10260557) 
10:30 a.m.
On the Problem of Packing Steiner trees of a Graph.
Louis Petingi*, Computer Science Department, College of Staten Island, City University of New York
(10260573)

8:00 a.m.

Saturday April 14, 2007, 8:00 a.m.10:50 a.m.
Special Session on Differential Algebra, I
Room 118, Burchard
Organizers:
Phyllis J. Cassidy, Smith College and The City College of CUNY
Richard C. Churchill, Hunter College and The Graduate Center of CUNY
Li Guo, Rutgers University at Newark
William F. Keigher, Rutgers University at Newark
Jerald J. Kovacic, The City College of CUNY jkovacic@verizon.net
William Sit, The City College of CUNY

8:00 a.m.
Differential Equations and Frobenius Structures.
B. Heinrich Matzat*, Interdisciplinary Center for Scientific Computing, RuprechtKarlsUniversity of Heidelberg
(102612135) 
8:30 a.m.
Subfields of the complete PicardVessiot closure of a differential field.
Andy R. Magid*, University of Oklahoma
(10261287) 
9:00 a.m.
Arithmetic Partial Differential Equations.
Alexandru Buium*, University of New Mexico
Santiago Simanca, University of New Mexico
(10261124) 
9:30 a.m.
Analytic $q$difference equations, universal rings and universal Galois groups.
Marius van der Put*, University of Groningen, The Netherlands
(10263485) 
10:00 a.m.
Local differential galois group and adjoint representation.
Elie Compoint, Université des Sciences et Technologies de Lille
Anne Duval*, Université des Sciences et Technologies de Lille
(10262281) 
10:30 a.m.
Differential Central Simple Algebras and Noncommutative PicardVessiot Cocycles.
Lourdes Juan*, Texas Tech University
Andy R. Magid, University of Oklahoma
(102620102)

8:00 a.m.

Saturday April 14, 2007, 8:00 a.m.10:50 a.m.
Special Session on Automorphic Forms and Arithmetic Geometry, I
Room 229A, Edwin A. Stevens Building
Organizers:
Gautam Chinta, City College of New York chinta@sci.ccny.cuny.edu
Paul E. Gunnells, University of Massachusetts, Amherst gunnells@math.umass.edu

8:30 a.m.
Congruences between modular forms of prime level.
Scott Ahlgren*, University of Illinois
(102611209) 
9:00 a.m.
On Eisenstein series twisted by modular symbols.
Yiannis N Petridis*, The Graduate Center and Lehman College, City University of New York
Morten Skarsholm Risager, Aarhus University, Denmark
(102611171) 
9:30 a.m.
Higherorder automorphic forms and a conjectural inner product.
Cormac O'Sullivan*, Bronx Community College, CUNY
Ozlem Imamoglu, ETH, Zurich
Jay Jorgenson, City College, CUNY
(102611112) 
10:00 a.m.
Periods of automorphic forms.
Omer Offen*, Humboldt Universitaet zu Berlin
(10261171) 
10:30 a.m.
On the existence of Bessel functionals.
Ramin TaklooBighash*, Princeton University
(10261138)

8:30 a.m.

Saturday April 14, 2007, 8:30 a.m.10:20 a.m.
Special Session on Nonlinear Waves in Dissipative/Dispersive Media, I
Room 229, Edwin A. Stevens Building
Organizers:
Keith S. Promislow, Michigan State University kpromisl@math.msu.edu
Yi Li, Stevens Institute of Technology yili@cs.stevens.edu

8:30 a.m.
Influence of microscopic noise on the largescale evolution of dispersionmanaged solitons.
Tobias B. Schaefer*, The College of Staten Island, CUNY
(102635233) 
9:00 a.m.
Stability of fronts in nonsmooth excitable media in a noisy environment.
Keith S Promislow*, Michigan State University
Mohar Guha, Michigan State University
(102635179) 
9:30 a.m.
Travelling Waves in the Thermally Loaded Parametrically Forced Nonlinear Schr\"odinger Equation.
Richard O. Moore*, New Jersey Institute of Technology
(102635200) 
10:00 a.m.
Fractal Structure in Solitary Wave Interactions.
Roy H. Goodman*, New Jersey Institute of Technology
Richard Habernan, Southern Methodist University
(102670194)

8:30 a.m.

Saturday April 14, 2007, 8:30 a.m.10:50 a.m.
Special Session on Convex Sets, I
Room 222, Edwin A. Stevens Building
Organizers:
David Larman, University College London
Valeriu Soltan, George Mason University vsoltan@gmu.edu

8:30 a.m.
Stability results for convex bodies.
Rolf Schneider*, University of Freiburg, Germany
(10265299) 
9:00 a.m.
Isometry invariant valuations on hyperbolic space.
Daniel A. Klain*, University of Massachusetts Lowell, Lowell, MA
(102652182) 
9:30 a.m.
Bivaluations on Convex Bodies.
Monika Ludwig*, Polytechnic University New York
(102652134) 
10:00 a.m.
Pairs of compact convex sets.
Diethard Ernst Pallaschke*, Institute for Statistics and Math. Economics, University of Karlsruhe
Ryszard Urbanski, Adam Mickiewicz University Poznan, Poland
(10265214) 
10:30 a.m.
Some applications of crosssection measures in Minkowski spaces.
Horst Martini, University of Techology Chemnitz, Germany
Zokhrab Mustafaev*, University of HoustonClear Lake
(10265216)

8:30 a.m.

Saturday April 14, 2007, 9:00 a.m.10:20 a.m.
Special Session on Fourier Analysis and Convexity, I
Room 231, Edwin A. Stevens Building
Organizers:
Alexander Koldobsky, University of Missouri Columbia koldobsk@math.missouri.edu
Dmitry Ryabogin, Kansas State University ryabs@math.ksu.edu

9:00 a.m.
Valuation algebras and integral geometry.
Joseph H.G. Fu*, University of Georgia
(10265260) 
9:30 a.m.
Valuations and $L_p$radial addition.
Christoph Haberl*, Technical University Vienna
(102652120) 
10:00 a.m.
Valuations, Multiplier Transformations and Projection Bodies.
Franz Schuster*, Vienna University of Technology
Rolf Schneider, AlbertLudwigsUniversity Freiburg
(10265267)

9:00 a.m.

Saturday April 14, 2007, 9:00 a.m.10:50 a.m.
Special Session on Mathematical Aspects of Cryptography, I
Room 308, Edwin A. Stevens Building
Organizers:
Robert H. Gilman, Stevens Institute of Technology rgilman@stevens.edu
Neal I. Koblitz, University of Washington koblitz@math.washington.edu
Susanne Wetzel, Stevens Institute of Technology swetzel@stevens.edu

9:00 a.m.
The Algebraic Eraser$^{TM}$ for RFID.
Dorian Goldfeld*, Columbia University
Iris Anshel, SecureRF Corporation
Michael Anshel, City College of New York
(102694113) 
9:40 a.m.
Solving RSA Problems with Lattice Reduction.
Alexander May*, TU Darmstadt
(102611196) 
10:20 a.m.
Pseudopowers and Primality Proving.
P. Berrizbetia, Universidad Sim\'on Bol\'ivar
S. Muller, University of Wyoming
Hugh C. Williams*, University of Calgary
(102611174)

9:00 a.m.

Saturday April 14, 2007, 9:30 a.m.10:50 a.m.
Special Session on Optimization of Stochastic Systems, I
Room 430, Burchard
Organizers:
Darinka Dentcheva, Stevens Institute of Technology ddentche@stevens.edu
Andrzej Ruszczynski, Rutgers University

9:30 a.m.
Bayesian sequential detection and isolation of an unobservable sudden change.
Savas Dayanik*, Princeton University
Christian L Goulding, Princeton University
H Vincent Poor, Princeton University
(102660192) 
10:00 a.m.
Stability and Sensitivity of Optimization Problems with First Order Stochastic Dominance Constraints.
Darinka Dentcheva*, Stevens Institute of Technology
Rene Henrion, Weierstrass Institute
Andrzej Ruszczynski, Rutgers University
(102649155) 
10:30 a.m.
Stochastic dynamic optimization with multivariate stochastic dominance constraints.
Darinka Dentcheva, Stevens Institute of Technology
Andrzej Ruszczynski*, Rutgers University
(102649154)

9:30 a.m.

Saturday April 14, 2007, 9:30 a.m.10:50 a.m.
Special Session on Affine Invariants, Randomness, and Approximation in Convex Geometry, I
Room 230, Edwin A. Stevens Building
Organizers:
Elisabeth Werner, Case Western Reserve University elisabeth.werner@case.edu
Artem Zvavitch, Kent State University zvavitch@math.kent.edu

9:00 a.m.
Optimal Sobolev Norms and the Minkowski Problem.
Erwin Lutwak, Polytechnic University
Deane Yang*, Polytechnic University
Gaoyong Zhang, Polytechnic University
(102652147) 
9:30 a.m.
Delauney graphs with respect to rectangles.
Janos Pach*, City College, CUNY, New York and Renyi Institute, Budapest
Xiaomin Chen, Google
Mario Szegedy, Rutgers University
Gabor Tardos, Simon Fraser University
(10260592) 
10:00 a.m.
Random convex chains.
Imre B\'ar\'any*, R\'enyi Institute (Hungary) and University College (London)
(10265250) 
10:30 a.m.
A sharp RogersShephard type inequality for the $p$difference body of a planar convex body.
Andrea Colesanti*, 'U. Dini', Universita' degli Studi di Firenze
Chiara Bianchini, 'U. Dini', Universita' degli Studi di Firenze
(102652110)

9:00 a.m.

Saturday April 14, 2007, 9:30 a.m.10:50 a.m.
Special Session on Languages and Groups, I
Room 130, Edwin A. Stevens Building
Organizers:
Sean Cleary, The City College of New York and CUNY Graduate Center cleary@sci.ccny.cuny.edu
Murray J. Elder, Stevens Institute of Technology murrayelder@gmail.com
Gretchen Ostheimer, Hofstra University gretchen.ostheimer@hofstra.edu

9:30 a.m.
On groups with $L$presentations.
Zoran \v{S}uni\'{c}*, Texas A&M University
(102620207) 
10:00 a.m.
The automata that define representations of monomial algebras.
Sarah E. Rees*, University of Newcastle
(102620123) 
10:30 a.m.
Groups and Counters.
Murray Elder, Stevens Institute of Technology
Mark Kambites*, University of Manchester
Gretchen Ostheimer, Hofstra University
(10262090)

9:30 a.m.

Saturday April 14, 2007, 9:30 a.m.10:50 a.m.
Special Session on Combinatorial Algebraic Geometry, I
Room 329, Edwin A. Stevens Building
Organizers:
Angela C. Gibney, University of Pennsylvania agibney@math.upenn.edu
Diane Maclagan, Rutgers University maclagan@math.rutgers.edu

9:30 a.m.
Koszul cohomology and moduli of Prym varieties.
Gavril Farkas*, University of Texas at Austin
(102614217) 
10:00 a.m.
Linear algebra on quadrics.
Izzet Coskun*, MIT
(102614103) 
10:30 a.m.
The Newton Polytope of the Implicit Equation.
Jenia Tevelev, University of Massachusetts, Amherst
Bernd Sturmfels, UC Berkeley
Josephine Yu*, UC Berkeley
(10261455)

9:30 a.m.

Saturday April 14, 2007, 11:10 a.m.12:00 p.m.
Invited Address
Convex bodies: Best and random approximation.
Room 118, Burchard
Elisabeth Werner*, Case Western Reserve University
(10265204) 
Saturday April 14, 2007, 1:30 p.m.2:20 p.m.
Invited Address
Stormy marriageA Periodizaton of the History of the Relationship between Mathematics and Cryptography.
Room 118, Burchard
Neal Koblitz*, University of Washington, Seattle
(10269403) 
Saturday April 14, 2007, 2:30 p.m.5:20 p.m.
Special Session on Number Theory, II
Room 330, Edwin A. Stevens Building
Organizers:
Florian Luca, Universidad Nacional Aut\'onoma de M\'exico fluca@matmor.unam.mx
Allison M. Pacelli, Williams College allison.pacelli@williams.edu

2:30 p.m.
Another $n$point $abc$ Conjecture.
Robert L Benedetto*, Amherst College
(10261195) 
3:00 p.m.
Generalized Artin's conjecture over function fields.
Ebru Bekyel*, University of Washington
(102611224) 
3:30 p.m.
Prime Values of Polynomials in Positive Characteristic.
Paul Pollack*, Dartmouth College
(102611213) 
4:00 p.m.
Ideal Class Groups and Rational Torsion in Jacobians of Curves.
Aaron Levin*, Brown University
(10261180) 
4:30 p.m.
Bounding the $3$part of class numbers of quadratic fields via the square sieve.
Lillian B. Pierce*, Princeton University
(102611106) 
5:00 p.m.
The GeneralizedEulerConstant Function $\gamma(z)$ and a Generalization of Somos's Quadratic Recurrence Constant.
Jonathan Sondow*, New York, NY
Petros Hadjicostas, Texas Tech University
(10261108)

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.5:20 p.m.
Special Session on Graph Theory and Combinatorics, II
Room 212, Edwin A. Stevens Building
Organizers:
Daniel J. Gross, Seton Hall University grossdan@shu.edu
Nathan W. Kahl, Seton Hall University kahlnath@shu.edu
John T. Saccoman, Seton Hall University saccomjt@shu.edu
Charles L. Suffel, Stevens Institute of Technology csuffel@stevens.edu

2:30 p.m.
Irregularity Strength of Dense Graphs.
Bill Cuckler*, University of Delaware
Felix Lazebnik, University of Delaware
(102605117) 
3:00 p.m.
Some Algebraic Structures on Rooted Trees.
Li Guo*, Rutgers University at Newark
(10260563) 
3:30 p.m.
Path coverings with prescribed ends in hypercubes with faulty nodes.
Nelson Castaneda*, Central Connecticut State University
Ivan Gotchev, Central Connecticut State University
(10260521) 
4:00 p.m.
"Largest Bonds in Graphs".
Nolan B. McMurray, Jr.*, Texas State University
Talmage James Reid, University of Mississippi
Laura Sheppardson, University of Mississippi
Bing Wei, University of Mississippi
Haidong Wu, University of Mississippi
(10260594) 
4:30 p.m.
The prevalence of "paradoxical" dice. II. Tied dice.
Lorenzo Traldi*, Lafayette College
Brian Kronenthal, Lafayette College
(10260522) 
5:00 p.m.
The Distinguishing Chromatic Number and Wreath Products.
Karen L Collins*, Wesleyan University
(10260520)

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.4:50 p.m.
Special Session on Nonlinear Waves in Dissipative/Dispersive Media, II
Room 229, Edwin A. Stevens Building
Organizers:
Keith S. Promislow, Michigan State University kpromisl@math.msu.edu
Yi Li, Stevens Institute of Technology yili@cs.stevens.edu

2:30 p.m.
Energy convergence for singular limits of Zakharov type systems.
Nader Masmoudi*, Courant Institute of Mathematical Sciences
(102635199) 
3:00 p.m.
Propagation of pressure driven flames in porous media.
Peter Gordon*, New Jersey Institute of Technology
(102635180) 
3:30 p.m.
How many stable pulses can a synaptically coupled neuronal network support?
Linghai Zhang*, Lehigh University
(102692197) 
4:00 p.m.
On a class of solutions of integrable systems.
M Kovalyov*, University of Alberta
(10263566) 
4:30 p.m.
Nonlinear Dispersive approximations to the water wave problem.
Yi Li*, stevens institute of technology
(102635231)

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.5:20 p.m.
Special Session on Optimization of Stochastic Systems, II
Room 430, Burchard
Organizers:
Darinka Dentcheva, Stevens Institute of Technology ddentche@stevens.edu
Andrzej Ruszczynski, Rutgers University

2:30 p.m.
Monetary Risk Measures on Maximal Subspaces of Orlicz Classes.
Patrick Cheridito*, Princeton University
Tianhui Li, Princeton University
(102660181) 
3:00 p.m.
Martingale Approach to Stochastic Differential Games of Control and Stopping.
Ioannis Karatzas, Columbia University
Ingrid Mona Zamfirescu*, Baruch College  CUNY
(102660116) 
3:30 p.m.
Homogenization of HamiltonJacobiBellman equations with respect to timespace shifts in a stationary ergodic random medium.
Elena Kosygina*, Baruch College and the Graduate Center, CUNY
Srinivasa R. S. Varadhan, Courant Institute of Mathematical Sciences, NYU
(102660100) 
4:00 p.m.
Hedging under L2 convex risk measures.
Antoine Toussaint*, Princeton University
(102660173) 
4:30 p.m.
Accounting for Risk Aversion and Other Idiosyncrasies in the Valuation of Employee Stock Options.
Tim Siutang Leung*, Princeton University
Ronnie Sircar, Princeton University
(102660115) 
5:00 p.m.
Coefficient Estimation for Diffusion Equations with a hidden factor.
Ionut Florescu*, Stevens Institute of Technology
(10266077)

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.5:20 p.m.
Special Session on Convex Sets, II
Room 222, Edwin A. Stevens Building
Organizers:
David Larman, University College London
Valeriu Soltan, George Mason University vsoltan@gmu.edu

2:30 p.m.
Decomposition of multiple coverings into coverings.
Janos Pach*, City College, CUNY, New York and Renyi Institute, Budapest
Geza Toth, Renyi Institute
(10265291) 
3:00 p.m.
Distributing an infinite point sequence uniformly in a region.
Peter Brass*, City College New York
(102652145) 
3:30 p.m.
On the infinitesimal rigidity of weakly convex polyhedra.
Robert Connelly*, Cornell University
JeanMarc Schlenker, Universit\'e Paul Sabatier
(102652163) 
4:00 p.m.
The moment theorem for convex sets.
G\'abor Fejes T\'oth*, R\'enyi Institute of the Hungarian Academy of Sciences
(102652168) 
4:30 p.m.
Classification of bicyclic 4polytopes.
Ted Bisztriczky*, University of Calgary
(102652128) 
5:00 p.m.
On iterative processes generating dense point sets.
Andras Bezdek*, Auburn University, Auburn, AL
(102652215)

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.4:20 p.m.
Special Session on Affine Invariants, Randomness, and Approximation in Convex Geometry, II
Room 230, Edwin A. Stevens Building
Organizers:
Elisabeth Werner, Case Western Reserve University elisabeth.werner@case.edu
Artem Zvavitch, Kent State University zvavitch@math.kent.edu

2:30 p.m.
On the measuretheoretic Dvoretzky's theorem.
Mark W Meckes*, Cornell University
(10265229) 
3:00 p.m.
Sharp spectral gap in the Kac model for three dimensional momentum conserving collisions.
Eric A Carlen*, School of Mathematics, Georgia Tech
Jeff Geronimo, School of Math, Georgia Tech
Michael Loss, School of Math, Georgia Tech
(102660167) 
3:30 p.m.
Edgeantipodal polytopes.
Ted Bisztriczky*, Department of Mathematics and Statistics,University of Calgary
(102652127) 
4:00 p.m.
Discussion.

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.5:20 p.m.
Special Session on Fourier Analysis and Convexity, II
Room 231, Edwin A. Stevens Building
Organizers:
Alexander Koldobsky, University of Missouri Columbia koldobsk@math.missouri.edu
Dmitry Ryabogin, Kansas State University ryabs@math.ksu.edu

2:30 p.m.
Geometric Inequalities for Bounded Symmetric Domains.
Eric L. Grinberg*, University of New Hampshire
(102652211) 
3:00 p.m.
Sums and Products via Fourier Analysis.
Derrick Hart, University of MissouriColumbia
Alex Iosevich*, University of Missouri
Jozsef Solymosi, University of British Columbia
(10265234) 
3:30 p.m.
Fourier Transforms with Only Real Zeros and Probability.
Wenbo V. Li*, University of Delaware
(102660139) 
4:00 p.m.
The determination of convex bodies from derivatives of section functions.
Christopher Shane*, University of Missouri Columbia
Alexander Koldobsky, University of Missouri Columbia
(102652121) 
4:30 p.m.
Semyanistyi's integrals and Radon transforms on matrix spaces.
Elena Ournycheva*, Kent State University
Boris Rubin, Louisiana State University
(102642132) 
5:00 p.m.
The Ros' theorem for convex domain.
Jiazu Zhou*, Southwest University
Deshuo Jiang, Wuhan University
(10265253)

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.5:20 p.m.
Special Session on Differential Algebra, II
Room 118, Burchard
Organizers:
Phyllis J. Cassidy, Smith College and The City College of CUNY
Richard C. Churchill, Hunter College and The Graduate Center of CUNY
Li Guo, Rutgers University at Newark
William F. Keigher, Rutgers University at Newark
Jerald J. Kovacic, The City College of CUNY jkovacic@verizon.net
William Sit, The City College of CUNY

2:30 p.m.
Patching and differential Galois groups.
David Harbater, University of Pennsylvania
Julia Hartmann*, University of Heidelberg
(102613137) 
3:00 p.m.
Iterative $q$ difference Galois theory.
Charlotte Hardouin*, IWR Heidelberg Germany
(10268170) 
3:30 p.m.
Tannakian formalism for linear differential algebraic groups.
Alexey Ovchinnikov*, North Carolina State University
(102613144) 
4:00 p.m.
A generalization of the RiemannHilbert Problem.
Claude Mitschi*, Universit\'e Louis Pasteur, Strasbourg (France)
(102634114) 
4:30 p.m.
BorelLaplace summation of qseries and confluence.
Lucia Di Vizio*, Institut de Mathematiques de Jussieu, Paris, France
(102633151) 
5:00 p.m.
Standard bases in differential algebra.
Eugueny V. Pankratiev*, Moscow State University
(102612124)

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.5:20 p.m.
Special Session on Automorphic Forms and Arithmetic Geometry, II
Room 229A, Edwin A. Stevens Building
Organizers:
Gautam Chinta, City College of New York chinta@sci.ccny.cuny.edu
Paul E. Gunnells, University of Massachusetts, Amherst gunnells@math.umass.edu

2:30 p.m.
Hyperbolic Lattice Point Count in Infinite Volume with Applications to Sieves.
Alex V Kontorovich*, Columbia University
(10261142) 
3:00 p.m.
A Dynamic MordellLang Conjecture for Split Polynomial Maps.
Thomas J Tucker*, University of Rochester
Dragos Ghioca, McMaster Unversity
(10261197) 
3:30 p.m.
A Shafarevich Faltings finitness theorem for rational maps (work with T.Tucker).
Lucien Szpiro*, CUNY Graduate Center
(10261145) 
4:00 p.m.
On the central critical value of certain Lfunctions.
Farshid Hajir*, University of Massachusetts, Amherst
Paul Gunnells, University of Massachusetts, Amherst
(102611107) 
4:30 p.m.
Rank Lowering Operators on GL($n$).
Dorian Goldfeld*, Columbia University
(102611138) 
5:00 p.m.
Polyhedral theta functions, polyhedral Gauss sums, and extensions of the Gram relations for polytopes.
Sinai Robins*, Temple University
(10265239)

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.4:20 p.m.
Special Session on Languages and Groups, II
Room 130, Edwin A. Stevens Building
Organizers:
Sean Cleary, The City College of New York and CUNY Graduate Center cleary@sci.ccny.cuny.edu
Murray J. Elder, Stevens Institute of Technology murrayelder@gmail.com
Gretchen Ostheimer, Hofstra University gretchen.ostheimer@hofstra.edu

2:30 p.m.
Garside Groups Have FFTP.
Derek F. Holt*, University of Warwick
(10262026) 
3:00 p.m.
Generic and Structural Properties of Random Automata.
Parisa Babaali*, Stevens Institute of Technology
(102620133) 
3:30 p.m.
Growth in BaumslagSolitar groups: Subgroups and rationality.
Eric M Freden*, Southern Utah University
Caroline Nielson, Southern Utah University
(102620141)

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.4:50 p.m.
Special Session on Mathematical Aspects of Cryptography, II
Room 308, Edwin A. Stevens Building
Organizers:
Robert H. Gilman, Stevens Institute of Technology rgilman@stevens.edu
Neal I. Koblitz, University of Washington koblitz@math.washington.edu
Susanne Wetzel, Stevens Institute of Technology swetzel@stevens.edu

2:30 p.m.
Cryptographic applications involving Spectral Analysis of Rapid mixing.
Ramarathnam Venkatesan*, Microsoft Research, Redmond and Bangalore
(102668195) 
3:10 p.m.
On Defining and Proving Security in Cryptographic Key Establishment.
Rainer Steinwandt*, Florida Atlantic University
(10269476) 
3:50 p.m.
Discussion: The Relationship between Mathematics and Cryptography.

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.4:50 p.m.
Special Session on Combinatorial Algebraic Geometry, II
Room 329, Edwin A. Stevens Building
Organizers:
Angela C. Gibney, University of Pennsylvania agibney@math.upenn.edu
Diane Maclagan, Rutgers University maclagan@math.rutgers.edu

2:30 p.m.
Gale duality via geometry.
Nicholas J Proudfoot*, Columbia University
Tom Braden, University of Massachusetts
Anthony Licata, Yale University
(102614108) 
3:00 p.m.
Graph curves: equations and automorphisms.
David Swinarski*, Columbia University
(10261462) 
3:30 p.m.
Constructions on Polytopes inspired by a String Theory duality.
Antonella Grassi*, University of Pennsylvania
(102614142) 
4:00 p.m.
A hierarchy of polytopes: toric Fano varieties.
Alexander Mieczyslaw Kasprzyk*, University of New Brunswick
(102614189) 
4:30 p.m.
Linear resolutions of edge ideals.
Noam Horwitz*, Cornell University
(102614164)

2:30 p.m.

Saturday April 14, 2007, 2:30 p.m.5:25 p.m.
Contributed Paper Session, I
Room 205, Morton

2:30 p.m.
Charles Babbage's Contributions to Cryptography.
Marina Vulis*, CUNY
(102601230) 
2:45 p.m.
Extending Toughness to Infinite Graphs.
Kevin K. Ferland*, Bloomsburg University of PA
(10260552) 
3:00 p.m.
Break. 
3:15 p.m.
Infinitely Often Dense Bases with a Prescribed Representation Function.
Jaewoo Lee*, Borough of Manhattan Community College, The City University of New York
(10261149) 
3:30 p.m.
Revisit on A4 = B4 + C4 + D4  E4  F4.
Susil Kumar Jena*, KIIT University, Bhubaneswar, Orissa, India
(102611198) 
3:45 p.m.
A normal form for elements of Thompson's group $F(2,3)$.
Claire W Wladis*, City University of New York
(102620216) 
4:00 p.m.
Notes on Supermodularity of Outer Measures.
Carmen Vlad*, Pace University , New York , NY
(102628152) 
4:15 p.m.
Absolute Summability Factors of an Infinite Series.
Syed M. Mazhar*, Kuwait University
(102640166) 
4:30 p.m.
Solvability and the number of solutions of Hammerstein equations.
P. S. Milojevic*, , New Jersey Institute of Technology
(102647203) 
4:45 p.m.
Dynamics of Genetic Differentiation in Structured Populations.
Sivan Rottenstreich*, Georgetown University
(102692131) 
5:00 p.m.
Selforganization in sociobiological systems: from individual imitations to complex population patterns.
Nikolay Strigul*, Stevens Institute of Technology
(10269217) 
5:15 p.m.
Wildlife Tracking under Noisy or Unreliable Measurements.
Channa N Navaratna*, Indiana University of Pennsylvania
Menaka B Navaratna, Florida Gulf Coast University
(102692214)

2:30 p.m.

Saturday April 14, 2007, 5:30 p.m.6:30 p.m.
Stevens Insitute of Technology Department of Mathematical Sciences Reception
Atrium, Babbio
Sunday April 15, 2007

Sunday April 15, 2007, 8:00 a.m.12:00 p.m.
Meeting Registration
McLean, Lobby, McLean 
Sunday April 15, 2007, 8:00 a.m.10:50 a.m.
Special Session on Number Theory, III
Room 330, Edwin A. Stevens Building
Organizers:
Florian Luca, Universidad Nacional Aut\'onoma de M\'exico fluca@matmor.unam.mx
Allison M. Pacelli, Williams College allison.pacelli@williams.edu

8:00 a.m.
Rational Periodic Points for Rational Maps with Automorphims.
Michelle Manes*, Brown University
(102611184) 
8:30 a.m.
Arithmetic Dynamics on Projective Varieties: Reduction of Periodic Points.
Benjamin Hutz*, Brown University
(102611160) 
9:00 a.m.
On the period of the linear congruential and power generators.
Par Kurlberg*, KTH
Carl Pomerance, Dartmouth College
(102611191) 
9:30 a.m.
Prime divisors of binomial coefficients and the like.
Michael Bennett, University of British Columbia
Michael Filaseta*, University of South Carolina
Ognian Trifonov, University of South Carolina
(102611183) 
10:00 a.m.
Algebraic Properties of Certain Jacobi Polynomials.
John Cullinan*, Bard College
(102611136) 
10:30 a.m.
Cyclotomic Polynomials of Order Three and Maximal Height of Divisors of $x^n1$.
Nathan Kaplan*, Princeton University
(102611146)

8:00 a.m.

Sunday April 15, 2007, 8:00 a.m.10:50 a.m.
Special Session on Graph Theory and Combinatorics, III
Room 212, Edwin A. Stevens Building
Organizers:
Daniel J. Gross, Seton Hall University grossdan@shu.edu
Nathan W. Kahl, Seton Hall University kahlnath@shu.edu
John T. Saccoman, Seton Hall University saccomjt@shu.edu
Charles L. Suffel, Stevens Institute of Technology csuffel@stevens.edu

8:00 a.m.
Hamiltonian Cycles That Avoid Sets of Edges in a Graph.
Michael J Ferrara*, University of Colorado at Denver
Michael S Jacobson, University of Colorado at Denver
Angela Harris, University of Colorado at Denver
(102605175) 
8:30 a.m.
Chain covers of chordal bipartite graphs.
Arthur H. Busch*, University of Dayton
Atif Abueida, University of Dayton, Department of Mathematics
R. Sritharan, University of Dayton, Department of Computer Science
(10260569) 
9:00 a.m.
Sum List Coloring.
Brian Heinold*, Mount St. Mary's University
(10260511) 
9:30 a.m.
Dynamic Domination in Graphs.
Steven B. Horton*, USMA
Jean R. S. Blair, Department of Electrical Engineering and Computer Science, USMA
Ralucca Gera, Naval Postgraduate School
(10260568) 
10:00 a.m.
An Edge Count Criterion for Degree Sequences.
Garth Isaak*, Lehigh University, Department of Mathematics
(10260586) 
10:30 a.m.
Multidesigns in graph products.
Mike Daven*, Mount Saint Mary College
(10260574)

8:00 a.m.

Sunday April 15, 2007, 8:00 a.m.10:20 a.m.
Special Session on Fourier Analysis and Convexity, III
Room 231, Edwin A. Stevens Building
Organizers:
Alexander Koldobsky, University of Missouri Columbia koldobsk@math.missouri.edu
Dmitry Ryabogin, Kansas State University ryabs@math.ksu.edu

8:00 a.m.
Intersection bodies with an (n1)dimensional face.
Maria Angeles Alfonseca*, North Dakota State University
Dmitry Ryabogin, Kansas State University
Artem Zvavitch, Kent State University
(102652187) 
8:30 a.m.
A note on $k$intersection bodies.
Jared Schlieper*, University of MissouriColumbia
(102642130) 
9:00 a.m.
Quadratic inequalities for Hilbert space operators.
V. A. Khatskevich, ORT Brauge College
M. I. Ostrovskii*, St. John's University
V. S. Shulman, Vologda State Technical University
(10264748) 
9:30 a.m.
Modified Shephard's problem on projections of convex bodies.
Vladyslav Yaskin*, University of Oklahoma
(102652126) 
10:00 a.m.
Shadow Boundaries and the Fourier Transform.
Paul R. Goodey, University of Oklahoma
Vladyslav Yaskin, University of Oklahoma
Maryna Yaskina*, University of Oklahoma
(102652129)

8:00 a.m.

Sunday April 15, 2007, 8:00 a.m.10:50 a.m.
Special Session on Differential Algebra, III
Room 118, Burchard
Organizers:
Phyllis J. Cassidy, Smith College and The City College of CUNY
Richard C. Churchill, Hunter College and The Graduate Center of CUNY
Li Guo, Rutgers University at Newark
William F. Keigher, Rutgers University at Newark
Jerald J. Kovacic, The City College of CUNY jkovacic@verizon.net
William Sit, The City College of CUNY

8:00 a.m.
Galois Theory and Spectral theory.
Primitivo B. AcostaHumanez*, Technical University of Catalonia
(102634140) 
8:30 a.m.
Gr\"obner bases in differencedifferential modules and their applications.
Franz Winkler*, RISC, J. Kepler University, Linz, Austria
(10260889) 
9:00 a.m.
Canonical representation of radical differential ideals.
Oleg Golubitsky*, Ontario Research Centre for Computer Algebra, University of Western Ontario
(102612186) 
9:30 a.m.
$\mathrm{PGL}_3$ as a differential Galois group.
Arne Ledet*, Texas Tech University
(10261227) 
10:00 a.m.
Factorization in Skew Polynomial Rings.
Yang Zhang*, DePaul University
(102616165) 
10:30 a.m.
Jacobi's work on normal forms of differential systems.
Fran{\c c}ois Ollivier*, LIX, UMR CNRS Ecole polytechnique 7161
(10261296)

8:00 a.m.

Sunday April 15, 2007, 8:00 a.m.10:50 a.m.
Special Session on History of Mathematics on Leonhard Euler's Tercentenary, I
Room 105, Morton
Organizers:
Patricia R. Allaire, Queensborough Community College, CUNY pallaire@qcc.cuny.edu
Robert E. Bradley, Adelphi University bradley@adelphi.edu
Lee J. Stemkoski, Adelphi University stemkoski@adelphi.edu

8:00 a.m.
Euler and the Prehistory of Statistics.
Robert E. Bradley*, Adelphi University
(102601190) 
8:30 a.m.
Euler and the Search for Foundations.
Thomas Drucker*, University of WisconsinWhitewater
(102601218) 
9:00 a.m.
The Prehistory of "Experimental" Mathematics.
Hardy Grant*, York University, Toronto
(102601111) 
9:30 a.m.
Topology Visits Algebraic Invariant Theory.
Paul R. Wolfson*, West Chester University
(10260140) 
10:00 a.m.
Henry J. S. Smith's Papers on Mathematical Crystallography: Part 1.
Francine F. Abeles*, Kean University
(10260109) 
10:30 a.m.
Brainpower for the Cold War: Mathematics Education in the Age of Sputnik.
Peggy A. Kidwell*, Smithsonian Institution
(102601234)

8:00 a.m.

Sunday April 15, 2007, 8:00 a.m.12:00 p.m.
Exhibit and Book Sale
McLean, 104, McLean 
Sunday April 15, 2007, 8:30 a.m.10:50 a.m.
Special Session on Convex Sets, III
Room 222, Edwin A. Stevens Building
Organizers:
David Larman, University College London
Valeriu Soltan, George Mason University vsoltan@gmu.edu

8:30 a.m.
Volume inequalities of $L_p$ projection bodies.
Erwin Lutwak, Polytechnic University of New York
Deane Yang, Polytechnic University of New York
Gaoyong Zhang*, Polytechnic University of New York
(102652176) 
9:00 a.m.
Determining Symmetric Convex Bodies by the Perimeters of Their Central Sections.
Ralph Howard*, University of South Carolina
Dmitry Ryabogin, Kansas State University
Anamaria Rusu, University of South Carolina
Artem Zvavitch, Kent State University
(10265293) 
9:30 a.m.
Weighted Projection Means of Convex Bodies.
Paul Goodey, University of Oklahoma
Markus Kiderlen, University of Aarhus, Denmark
Wolfgang Weil*, University of Karlsruhe, Germany
(102652169) 
10:00 a.m.
Slicing convex sets and measures by a hyperplane.
Imre B\'ar\'any*, Renyi Institute (Hungary) and University College (London)
Alfredo Hubard, UNAM, Mexico
Jer\'onimo Jesus, Centro de Matematicas, Guanajuato, Mexico
(10265251) 
10:30 a.m.
On the closedness of the linear image of a closed convex cone.
Gabor Pataki*, University of North Carolina at Chapel Hill
(10265284)

8:30 a.m.

Sunday April 15, 2007, 9:00 a.m.10:50 a.m.
Special Session on Optimization of Stochastic Systems, III
Room 430, Burchard
Organizers:
Darinka Dentcheva, Stevens Institute of Technology ddentche@stevens.edu
Andrzej Ruszczynski, Rutgers University

9:00 a.m.
Optimal Security Inspection with a Singleserver Queue.
Michael Zabarankin*, Stevens Institute of Technology
Ilona Murynets, Stevens Institute of Technology
Jeffery Nickerson, Stevens Institute of Technology
(102649220) 
9:30 a.m.
Markov Chain Approach to Optimal Sensor Coverage.
Sergiy Gorovyy*, Stevens Institute of Technology
Anton Molyboha, Stevens Institute of Technology
Michael Zabarankin, Stevens Institute of Technology
(102649226) 
10:00 a.m.
Quantilebased Deviation Measures.
Anton Molyboha*, Stevens Institute of Technology
Bogdan Grechuk, Stevens Institute of Technology
Michael Zabarankin, Stevens Institute of Technology
(102660225) 
10:30 a.m.
MeanDeviation Analysis.
Bogdan Grechuk*, Stevens Institute of Technology
Anton Molyboha, Stevens Institute of Technology
Michael Zabarankin, Stevens Institute of Technology
(102660222)

9:00 a.m.

Sunday April 15, 2007, 9:00 a.m.10:50 a.m.
Special Session on Affine Invariants, Randomness, and Approximation in Convex Geometry, III
Room 230, Edwin A. Stevens Building
Organizers:
Elisabeth Werner, Case Western Reserve University elisabeth.werner@case.edu
Artem Zvavitch, Kent State University zvavitch@math.kent.edu

9:00 a.m.
PoissonVoronoi approximation.
Matthias Reitzner*, Univ. Techn. Vienna
Matthias Heveling, Univ. Karlsruhe
(102652119) 
9:30 a.m.
Representing Gaussian Measure.
Rick Vitale*, Department of Statistics, University of Connecticut
(102660156) 
10:00 a.m.
A subgaussian embedding theorem.
Shahar Mendelson, ANU, Canberra, Australia and Technion, Haifa, Israel
Nicole TomczakJaegermann*, University of Alberta, Edmonton, Alberta, Canada
(102646150) 
10:30 a.m.
Volume thresholds for Gaussian and spherical random polytopes.
Peter Pivovarov*, University of Alberta
(10265241)

9:00 a.m.

Sunday April 15, 2007, 9:00 a.m.10:50 a.m.
Special Session on Automorphic Forms and Arithmetic Geometry, III
Room 229A, Edwin A. Stevens Building
Organizers:
Gautam Chinta, City College of New York chinta@sci.ccny.cuny.edu
Paul E. Gunnells, University of Massachusetts, Amherst gunnells@math.umass.edu

9:00 a.m.
Recent progress on multiple Dirichlet series.
Solomon Friedberg*, Boston College
(102611104) 
9:30 a.m.
Computing Multiple Dirichlet Series in a Rational Function Field.
Joel B. Mohler*, Lehigh University
(102611109) 
10:00 a.m.
Analytic Continuation of Langlands Lfunctions.
Stephen D. Miller*, Rutgers University
Wilfried Schmid, Harvard University
(10261137) 
10:30 a.m.
A simple proof of the Voronoi formula for GL(3).
X. Li*, SUNYBuffalo
D. Goldfled, Columbia Univ.
(10261154)

9:00 a.m.

Sunday April 15, 2007, 9:00 a.m.10:50 a.m.
Special Session on Mathematical Aspects of Cryptography, III
Room 308, Edwin A. Stevens Building
Organizers:
Robert H. Gilman, Stevens Institute of Technology rgilman@stevens.edu
Neal I. Koblitz, University of Washington koblitz@math.washington.edu
Susanne Wetzel, Stevens Institute of Technology swetzel@stevens.edu

9:00 a.m.
Unified addition formulae for elliptic curves.
Tanja Lange*, Technische Universiteit Eindhoven
(102611153) 
9:40 a.m.
Pairingfriendly elliptic curves for cryptography.
Edlyn E Teske*, University of Waterloo and CWI Amsterdam
(102611101) 
10:20 a.m.
Generalized Discrete Logarithm and Stickel's Key Exchange Scheme.
Michal Sramka*, Florida Atlantic University
(10262018)

9:00 a.m.

Sunday April 15, 2007, 9:00 a.m.10:50 a.m.
Special Session on Combinatorial Algebraic Geometry, III
Room 329, Edwin A. Stevens Building
Organizers:
Angela C. Gibney, University of Pennsylvania agibney@math.upenn.edu
Diane Maclagan, Rutgers University maclagan@math.rutgers.edu

9:00 a.m.
ChernSchwartzMacPherson classes for Schubert cells in the Grassmannian.
Leonardo Constantin Mihalcea*, Duke University
Paolo Aluffi, Florida State University
(102614158) 
9:30 a.m.
Equivariant GromovWitten invariants of Grassmannians.
Anders S. Buch*, Rutgers University
Leonardo C. Mihalcea, Duke University
(10261483) 
10:00 a.m.
Cominuscule Schubert calculus and tableau combinatorics.
Alexander Yong*, University of Minnesota
Hugh Thomas, University of New Brunswick
(10261482) 
10:30 a.m.
Divided difference operators for Grassmannians.
Julianna Tymoczko*, University of Michigan
(102614157)

9:00 a.m.

Sunday April 15, 2007, 9:00 a.m.10:25 a.m.
Contributed Paper Session, II
Room 205, Morton

9:00 a.m.
Recognition of Hamming code words by probabilistic finite automata.
Rudolfs Kreicbergs*, University of Latvia
Martins Zviedris, University of Latvia
(102668204) 
9:15 a.m.
Statistical differences between Scandinavian and American 2D digital art.
Rusins Freivalds*, University of Latvia
Richard F Bonner, Malardalen University, Sweden
Solvita Zarina, University of Latvia
(102668206) 
9:30 a.m.
Descriptive complexity of quantum automata.
Agnis Skuskovniks*, University of Latvia
(102668210) 
9:45 a.m.
Hamming distances for state transitions.
Karlis Podins, University of Latvia
Agnese Zalcmane*, University of Latvia
(102668212) 
10:00 a.m.
Universally Accepting Nondeterministic Automata.
Karlis Podins*, University of Latvia
(102668232) 
10:15 a.m.
Mathematical Modeling of Few Electron Quantum Dots in 2D and 3D space.
Lia Leon Margolin*, Marymount Manhattan College, New York, NY
Shalva Tsiklauri, University of Phoenix Jersey City Campus, NJ
(10267044)

9:00 a.m.

Sunday April 15, 2007, 9:30 a.m.10:50 a.m.
Special Session on Languages and Groups, III
Room 130, Edwin A. Stevens Building
Organizers:
Sean Cleary, The City College of New York and CUNY Graduate Center cleary@sci.ccny.cuny.edu
Murray J. Elder, Stevens Institute of Technology murrayelder@gmail.com
Gretchen Ostheimer, Hofstra University gretchen.ostheimer@hofstra.edu

9:30 a.m.
Automata, infinite words and groups acting on trees.
Denis Serbin*, McGill University
(102620161) 
10:00 a.m.
The Cayley semigroup of a finite semigroup.
Avi Mintz*, Hunter College
(102620219) 
10:30 a.m.
The submonoid and rational subset membership problems for graph groups.
Markus Lohrey, Universit\"at Stuttgart, FMI
Benjamin Steinberg*, Carleton University
(10262028)

9:30 a.m.

Sunday April 15, 2007, 11:10 a.m.12:00 p.m.
Invited Address
Values of arithmetic functions.
Room 118, Burchard
Florian Luca*, Universidad Nacional Aut\'onoma de M\'exico
(10261101) 
Sunday April 15, 2007, 1:30 p.m.2:20 p.m.
Invited Address
The enigma of the equations of fluid motion: A survey of existence and regularity results.
Room 118, Burchard
Natasa Pavlovic*, Princeton University
(10263502) 
Sunday April 15, 2007, 2:30 p.m.5:20 p.m.
Special Session on Graph Theory and Combinatorics, IV
Room 212, Edwin A. Stevens Building
Organizers:
Daniel J. Gross, Seton Hall University grossdan@shu.edu
Nathan W. Kahl, Seton Hall University kahlnath@shu.edu
John T. Saccoman, Seton Hall University saccomjt@shu.edu
Charles L. Suffel, Stevens Institute of Technology csuffel@stevens.edu

2:30 p.m.
Graphs whose vertices are graphs with bounded degree.
Louis V. Quintas*, Pace University
(10260546) 
3:00 p.m.
Irregularizable Graphs.
M Brennan, Purchase College (SUNY)
D Gagliardi, Canton Community College
M Lewinter*, Purchase College
(10260515) 
3:30 p.m.
Orbix, LightsOut, and Related Vertex Neighborhood Switching Phenomena.
John W. Kennedy*, Queen's College, CUNY
(102605185) 
4:00 p.m.
Improving a Greedy DNA Motif Search Using a Multiple Genomic SelfAdapting Genetic Algorithm.
Michael L. Gargano*, Pace University
Louis V. Quintas, Pace University
Gregory A. Vaughn, St. Francis College
(10260564) 
4:30 p.m.
Transformations on Digraphs as Intersection Digraphs  New Results.
Christina MD Zamfirescu*, Hunter College and Graduate Center  CUNY
(102605208) 
5:00 p.m.
Handshaking Puzzles.
F. T. Boesch*, Stevens Institute
(10260523)

2:30 p.m.

Sunday April 15, 2007, 2:30 p.m.4:50 p.m.
Special Session on Convex Sets, IV
Room 222, Edwin A. Stevens Building
Organizers:
David Larman, University College London
Valeriu Soltan, George Mason University vsoltan@gmu.edu

2:30 p.m.
Radontype results arising from McMullen's projective set problem.
David G. Larman*, University College London
Natalia GarciaColin, University College London
(102652205) 
3:00 p.m.
Characterizations of Ellipsoids by Sections.
Javier Alonso*, University of Extremadura
Pedro Martin, University of Extremadura
(10265258) 
3:30 p.m.
Combinatorial Multihedrality in Tilings.
Egon Schulte*, Northeastern University
(102652125) 
4:00 p.m.
Evenly convexity.
Margarita Rodr\'{i}guez \'{A}lvarez*, Department of Statistics and Operations Research. University of Alicante. Spain.
Jos\'{e} Vicente P\'{e}rez, Department of Statistics and Operations Research. University of Alicante. Spain.
(102690170) 
4:30 p.m.
Characteristic properties of convex quadric surfaces.
Valeriu Soltan*, George Mason University
(10265231)

2:30 p.m.

Sunday April 15, 2007, 2:30 p.m.3:50 p.m.
Special Session on Affine Invariants, Randomness, and Approximation in Convex Geometry, IV
Room 230, Edwin A. Stevens Building
Organizers:
Elisabeth Werner, Case Western Reserve University elisabeth.werner@case.edu
Artem Zvavitch, Kent State University zvavitch@math.kent.edu

2:30 p.m.
Closed convex hypersurfaces in Euclidean space with prescribed integral Gauss curvature and optimal transport on a sphere.
Vladimir Oliker*, Emory University
(10265235) 
3:00 p.m.
Asymmetry of convex polytopes and vertex index of symmetric convex bodies.
A. E. Litvak*, University of Alberta
E. D. Gluskin, Tel Aviv University
(10265278) 
3:30 p.m.
A central limit theorem for convex sets.
Bo'az B Klartag*, Princeton University
(10265230)

2:30 p.m.

Sunday April 15, 2007, 2:30 p.m.5:20 p.m.
Special Session on Differential Algebra, IV
Room 118, Burchard
Organizers:
Phyllis J. Cassidy, Smith College and The City College of CUNY
Richard C. Churchill, Hunter College and The Graduate Center of CUNY
Li Guo, Rutgers University at Newark
William F. Keigher, Rutgers University at Newark
Jerald J. Kovacic, The City College of CUNY jkovacic@verizon.net
William Sit, The City College of CUNY

2:30 p.m.
Dimension of Difference Field Extensions.
Alexander B. Levin*, The Catholic University of America
(102612122) 
3:00 p.m.
A theorem of Sit.
Wai Yan Pong*, California State University Dominguez Hills
Matthias Aschenbrenner, Unversity of Illinois at Chicago
(10260661) 
3:30 p.m.
Symbolicnumeric Computation of Implicit Riquier Bases for PDE.
Wenyuan Wu*, University of Western Ontario
Greg Reid, University of Western Ontario
(102635118) 
4:00 p.m.
Spectra of rings differentially finitely generated over a subring.
Dmitry Trushin*, Moscow State University
(10261388) 
4:30 p.m.
Symplectic Properties of the Space of Differential Equations in the Space of Logarithmic Systems.
Jonathan Alexander Aidan*, Institut de Mathématiques de Jussieu
(102634177) 
5:00 p.m.
Ominimality and quantifier elimination in some non quasianalytic classes.
Alexandre Rambaud*, University of MonsHainaut (Belgium) and Equipe de LogiqueUniversit\'e Paris 7
(102603159)

2:30 p.m.

Sunday April 15, 2007, 2:30 p.m.4:20 p.m.
Special Session on Mathematical Aspects of Cryptography, IV
Room 308, Edwin A. Stevens Building
Organizers:
Robert H. Gilman, Stevens Institute of Technology rgilman@stevens.edu
Neal I. Koblitz, University of Washington koblitz@math.washington.edu
Susanne Wetzel, Stevens Institute of Technology swetzel@stevens.edu

2:30 p.m.
Public key exchange: a new twist in the old plot.
Vladimir Shpilrain*, The City College of New York
(102694105) 
3:10 p.m.
Noncommutative Digital Signature.
Delaram Kahrobaei*, City University of New York
(102668178) 
3:50 p.m.
Generic Subgroups of Amalgams and Cryptography.
Benjamin Fine*, Fairfield University
Alexei Myasnikov, McGill University
Gerhard Rosenberger, Universitat Dortmund
(10262033)

2:30 p.m.

Sunday April 15, 2007, 2:30 p.m.4:20 p.m.
Special Session on History of Mathematics on Leonhard Euler's Tercentenary, II
Room 105, Morton
Organizers:
Patricia R. Allaire, Queensborough Community College, CUNY pallaire@qcc.cuny.edu
Robert E. Bradley, Adelphi University bradley@adelphi.edu
Lee J. Stemkoski, Adelphi University stemkoski@adelphi.edu

2:30 p.m.
Late Euler.
C Edward Sandifer*, Western Connecticut State University
(102601201) 
3:00 p.m.
Euler and the Enlightenment Mathematicians: A Scottish Perspective.
Amy AckerbergHastings*, University of Maryland University College
(10260112) 
3:30 p.m.
Euler on the Buckling of Columns.
Lawrence D'Antonio*, Ramapo College of New Jersey
(10260198) 
4:00 p.m.
Euler, Generating Functions, and Partitions.
Brian Hopkins*, Saint Peter's College
(10260119)

2:30 p.m.

Sunday April 15, 2007, 2:30 p.m.3:50 p.m.
Special Session on Combinatorial Algebraic Geometry, IV
Room 329, Edwin A. Stevens Building
Organizers:
Angela C. Gibney, University of Pennsylvania agibney@math.upenn.edu
Diane Maclagan, Rutgers University maclagan@math.rutgers.edu

2:30 p.m.
Some combnatorial conjectures linked to the nested Hilbert scheme and the ring of diagonal coinvariants.
James B Haglund*, University of Pennsylvania
Mahir Can, University of Western Ontario
(102605149) 
3:00 p.m.
Picardgraded Betti numbers and Cox rings.
Antonio Laface, Queen's University
Gregory G. Smith, Queen's University
Mauricio Velasco*, Cornell University
(102605143) 
3:30 p.m.
The Cox ring of $\overline{M}_{0,6}$.
AnaMaria Castravet*, UMass Amherst
(102614223)

2:30 p.m.