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Hungarian Academy of Sciences (MTA) | |
University of South Carolina | |
University of Minnesota, Twin Cities | |
North Carolina State University |
Enumerative combinatorics, or the mathematics of counting, has broad applications in probability, statistical physics, optimization, and computer science. Its problems require the strategic application of tools from many other areas of mathematics and, in recent years, have stimulated the development of many new results and tools. Geometric combinatorics focuses on discrete objects with geometric or topological structure, such as convex polytopes, arrangements of vectors, points, subspaces, and partially ordered sets. These give rise to counting problems that are sometimes hard even to estimate, and sometimes involve objects with interesting symmetry groups, giving rise to new combinatorics. The purpose of this workshop is to bring together researchers in the areas of geometric combinatorics and enumerative combinatorics to present new results and plan for further progress. It will include researchers from applications areas that supply some of the challenging problems for the field. In addition, it will include researchers who are developing innovative computational tools for enumeration. The organizers will take advantage of the local strength and tradition (both at the University of Minnesota and surrounding schools) in algebraic, geometric, and enumerative combinatorics.
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Monday November 10, 2014 | |||||||||||||||||||||||||||||||||||||||||||||||
8:00am-8:45am | Registration and Coffee | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
8:45am-9:00am | Welcome | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
9:00am-9:50am | Some Catalan Musings | Richard Stanley (Massachusetts Institute of Technology) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
9:50am-10:00am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
10:00am-10:30am | Coffee Break | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
10:30am-10:55am | Noncontractibility of Coset Posets and a Problem on Binomial Coefficients | John Shareshian (Washington University) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
10:55am-11:00am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
11:00am-11:25am | The Most and the Least Avoided Consecutive Patterns | Sergi Elizalde (Dartmouth College) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
11:25am-11:30am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
11:30am-2:00pm | Lunch | ||||||||||||||||||||||||||||||||||||||||||||||
2:00pm-2:50pm | Curves in R^d Intersecting Every Hyperplane at Most d+1 Times | Imre Bárány (Hungarian Academy of Sciences (MTA)) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
2:50pm-3:00pm | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
3:00pm-3:30pm | Coffee Break | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
3:30pm-3:55pm | Zeros of Generalized Eulerian Polynomials | Mirkó Visontai (Google Inc.) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
3:55pm-4:00pm | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
4:00pm-5:00pm | Discussion and Problems | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
6:00pm-8:00pm | Social Hour-Republic Pub 221 Cedar Ave Minneapolis, MN 55454 | ||||||||||||||||||||||||||||||||||||||||||||||
Tuesday November 11, 2014 | |||||||||||||||||||||||||||||||||||||||||||||||
8:30am-9:00am | Coffee | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
9:00am-9:50am | Accidental Meetings | János Pach (École Polytechnique Fédérale de Lausanne (EPFL)) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
9:50am-10:00am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
10:00am-10:15am | Group Photo | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
10:15am-10:30am | Coffee Break | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
10:30am-10:55am | Balanced and Unbalanced Collections | Louis Billera (Cornell University) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
10:55am-11:00am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
11:00am-11:25am | Combinatorics, Modular Forms, and Discrete Geometry | Peter Paule (Johannes Kepler Universität Linz) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
11:25am-11:30am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
11:30am-2:00pm | Lunch | ||||||||||||||||||||||||||||||||||||||||||||||
2:00pm-2:50pm | Hyperplane Arrangements and Colored (Non)-Increasing Trees | Sylvie Corteel (Centre National de la Recherche Scientifique (CNRS)) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
2:50pm-3:00pm | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
3:00pm-3:30pm | Coffee Break | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
3:30pm-3:55pm | Many Looks on the Lucas/Fibonacci Sequences and Polynomials | Tewodros Amdeberhan (Tulane University) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
3:55pm-4:00pm | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
4:05pm-6:00pm | Poster Session and ReceptionLind Hall 400
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Wednesday November 12, 2014 | |||||||||||||||||||||||||||||||||||||||||||||||
8:30am-9:00am | Coffee | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
9:00am-9:50am | Computing Partition Functions in Hard Problems of Combinatorial Enumeration | Alexander Barvinok (University of Michigan) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
9:50am-10:00am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
10:00am-10:30am | Coffee Break | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
10:30am-10:55am | Hard Tiling Problems with Triangles and Rhombi | Jed Yang (University of Minnesota, Twin Cities) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
10:55am-11:00am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
11:00am-11:25am | Random Lozenge Tilings/Plane Partitions | Greta Panova (University of Pennsylvania) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
11:25am-11:30am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
11:30am-2:00pm | Lunch | ||||||||||||||||||||||||||||||||||||||||||||||
2:00pm-2:50pm | On q-gamma-positivity | Michelle Wachs (University of Miami) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
2:50pm-3:00pm | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
3:00pm-3:30pm | Coffee Break | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
3:30pm-3:55pm | Dimension of Partially Ordered Sets | Attila Por (Western Kentucky University) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
3:55pm-4:00pm | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
4:00pm-5:00pm | Discussion and Problems | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
Thursday November 13, 2014 | |||||||||||||||||||||||||||||||||||||||||||||||
8:30am-9:00am | Coffee | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
9:00am-9:50am | Counting Permutations with Even Valleys and Odd Peaks | Ira Gessel (Brandeis University) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
9:50am-10:00am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
10:00am-10:30am | Coffee Break | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
10:30am-10:55am | Integral Versions of Helly's Theorem | Jesus De Loera (University of California, Davis) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
10:55am-11:00am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
11:00am-11:25am | Ehrhart Series, Unimodality, and Integrally Closed Reflexive Polytopes | Benjamin Braun (University of Kentucky) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
11:25am-11:30am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
11:30am-2:00pm | Lunch | ||||||||||||||||||||||||||||||||||||||||||||||
2:00pm-2:50pm | Lower Bound Theorems and a Generalized Lower Bound Conjecture for Balanced Simplicial Complexes | Isabella Novik (University of Washington) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
2:50pm-3:00pm | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
3:00pm-3:30pm | Coffee Break | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
3:30pm-3:55pm | Combinatorial Witnesses for Congruences of Restricted Partition Functions via Ehrhart Theory | Felix Breuer (Johannes Kepler Universität Linz) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
3:55pm-4:00pm | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
4:00pm-5:00pm | Discussion and Problems | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
Friday November 14, 2014 | |||||||||||||||||||||||||||||||||||||||||||||||
8:30am-9:00am | Coffee | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
9:00am-9:50am | Counting with Wang Tiles | Igor Pak (University of California, Los Angeles) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
9:50am-10:00am | Discussion | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
10:00am-10:30am | Coffee Break | Keller Hall 3-176 | |||||||||||||||||||||||||||||||||||||||||||||
10:30am-11:00am | Density-Type Theorems for Semi-Algebraic Hypergraphs | Andrew Suk (University of Illinois, Chicago) | Keller Hall 3-180 | ||||||||||||||||||||||||||||||||||||||||||||
10:55am-11:00am | Discussion | Keller Hall 3-180 | |||||||||||||||||||||||||||||||||||||||||||||
11:00am-12:00pm | Discussion and Problems | Keller Hall 3-180 |
NAME | DEPARTMENT | AFFILIATION |
---|---|---|
Ghodratollah Aalipour | Department of Mathematical Sciences | Kharazmi University |
Elie Alhajjar | Department of Mathematics | George Mason University |
Gergely Ambrus | Alfréd Rényi Institute of Mathematics | Hungarian Academy of Sciences (MTA) |
Tewodros Amdeberhan | Department of Mathematics | Tulane University |
Imre Bárány | Alfréd Rényi Institute of Mathematics | Hungarian Academy of Sciences (MTA) |
Fidel Barrera-Cruz | Department Combinatorics and Optimization | University of Waterloo |
Alexander Barvinok | Department of Mathematics | University of Michigan |
Anton Bernshteyn | Department of Mathematics | University of Illinois at Urbana-Champaign |
Andrew Beveridge | Department of Mathematics, Statistics and Computer Science | Macalester College |
Andras Bezdek | Department of Mathematics | Auburn University |
Louis Billera | Department of Mathematics | Cornell University |
Peter Blanchard | The University of Iowa | |
Sergey Bobkov | School of Mathematics | University of Minnesota, Twin Cities |
Chassidy Bozeman | Department of Mathematics | Iowa State University |
Benjamin Braun | Department of Mathematics | University of Kentucky |
Felix Breuer | Research Institute for Symbolic Computation | Johannes Kepler Universität Linz |
Steve Butler | Department of Mathematics | Iowa State University |
Michael Chmutov | Mathematics | University of Minnesota, Twin Cities |
Kai Fong Ernest Chong | Department of Mathematics | Cornell University |
Ameera Chowdhury | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Emma Cohen | Department of Mathematics | Georgia Institute of Technology |
Sylvie Corteel | Department of Computer Science | Centre National de la Recherche Scientifique (CNRS) |
Jesus De Loera | Department of Mathematics | University of California, Davis |
Stephen DeSalvo | Department of Mathematics | University of California, Los Angeles |
Chad Duna | Department of Mathematics | University of Kansas |
Sergi Elizalde | Department of Mathematics | Dartmouth College |
Brittney Ellzey | Department of Mathematics | University of Miami |
Miriam Farber | Department of Mathematics | Massachusetts Institute of Technology |
Naomi Feldheim | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Ohad Feldheim | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Laura Florescu | Courant Institute of Mathematical Sciences | New York University |
Radoslav Fulek | Department of Industrial Engineering and Operations Research | Columbia University |
Zoltan Furedi | Alfred Rényi Institute of Mathematics | Hungarian Academy of Sciences (MTA) |
Ira Gessel | Department of Mathematics | Brandeis University |
Alexey Glazyrin | Department of Mathematics | The University of Texas at Brownsville |
Max Glick | Department of Mathematics | University of Minnesota, Twin Cities |
Bennet Goeckner | Department of Mathematics | University of Kansas |
Rafael Gonzalez D'Leon | Department of Mathematics | University of Kentucky |
John Greene | Department of Mathematics and Statistics | University of Minnesota |
Jerrold Griggs | Department of Mathematics | University of South Carolina |
Emily Gunawan | School of Mathematics | University of Minnesota, Twin Cities |
Christian Haase | Department of Mathematics | Freie Universität Berlin |
James Haglund | Department of Mathematics | University of Pennsylvania |
Zachary Hamaker | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Jie Han | Department of Mathematics | Georgia State University |
Penny Haxell | Department of Combinatorics and Optimization | University of Waterloo |
Patricia Hersh | Department of Mathematics | North Carolina State University |
Kristin Heysse | School of Mathematics | Iowa State University |
Leslie Hogben | Department of Mathematics | Iowa State University |
Brent Holmes | Department of Mathematics | University of Kansas |
Ron Holzman | Department of Mathematics | Technion-Israel Institute of Technology |
Chetak Hossain | Department of Mathematics | North Carolina State University |
Hao Huang | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Sogol Jahanbekam | Department of Mathematics | University of Colorado Denver |
Jeong-Hyun Kang | Department of Mathematics | State University of West Georgia |
Ida Kantor | Institute of Theoretical Computer Science | Charles University in Prague |
William Keith | Department of Mathematical Sciences | Michigan Technological University |
Yvonne Kemper | Applied and Computational Mathematics | National Institute of Standards and Technology |
Florian Kohl | Department of Mathematics | University of Kentucky |
Wlodzimierz (Wlodek) Kuperberg | Department of Mathematics & Statistics | Auburn University |
Kagan Kursungoz | Faculty of Engineering and Natural Sciences | Sabanci University |
Tri Lai | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Alexander Lazar | Department of Mathematics | University of Miami |
Anh Vinh Le | Vietnam National University | |
Kang-Ju Lee | Department of Mathematical Sciences | Seoul National University |
Joel Lewis | Department of Mathematics | University of Minnesota, Twin Cities |
Bernard Lidicky | Department of Mathematics | Iowa State University |
Jephian Chin-Hung Lin | Department of Mathematics | Iowa State University |
Zeinab Maleki | Department of Mathematical Sciences | Isfahan University of Technology |
Arnaud Marsiglietti | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Jeremy Martin | Department of Mathematics | University of Kansas |
Ryan Martin | Department of Mathematics | Iowa State University |
Mikhail Mazin | Department of Mathematics | Kansas State University |
Arya Mazumdar | Department of Electrical and Computer Engineering | University of Minnesota, Twin Cities |
James McKeown | Department of Mathematics | University of Miami |
Karola Mészáros | Department of Mathematics | Cornell University |
Alejandro Morales | Department of Mathematics | University of California, Los Angeles |
Henri Muehle | Department of Computer Science | Université de Paris VII (Denis Diderot) |
Gregg Musiker | School of Mathematics | University of Minnesota, Twin Cities |
Humberto Naves | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Piotr Nayar | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Sarah Nelson | Department of Mathematics | University of Kentucky |
Isabella Novik | Department of Mathematics | University of Washington |
Andrew Odlyzko | School of Mathematics | University of Minnesota, Twin Cities |
Deborah Oliveros | Institute of Mathematics | National Autonomous University of Mexico (UNAM) |
Lale Özkahya | Department of Computer Engineering | Hacettepe University |
János Pach | Department of Combinatorial Geometry (DCG) | École Polytechnique Fédérale de Lausanne (EPFL) |
Igor Pak | Department of Mathematics | University of California, Los Angeles |
Greta Panova | Department of Mathematics | University of Pennsylvania |
Rebecca Patrias | University of Minnesota, Twin Cities | |
Peter Paule | Institute for Symbolic Computation (RISC) | Johannes Kepler Universität Linz |
Lerna Pehlivan | Department of Mathematics and Statistics | Dalhousie University |
Will Perkins | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Barbara Pilat | Faculty of Mathematics and Information Science | Warsaw University of Technology |
Attila Por | Department of Mathematics | Western Kentucky University |
Anna Pun Ying | Department of Mathematics | University of Pennsylvania |
Victor Reiner | School of Mathematics | University of Minnesota, Twin Cities |
Benjamin Reiniger | Department of Mathematics | University of Illinois at Urbana-Champaign |
Tom Roby | Department of Mathematics | University of Connecticut |
Barna Saha | Department of Computer Science | University of Massachusetts |
Jose Alejandro Samper Casas | Department of Mathematics | University of Washington |
Carla Savage | Department of Computer Science | North Carolina State University |
Arnab Sen | School of Mathematics | University of Minnesota, Twin Cities |
John Shareshian | Department of Mathematics | Washington University |
Liam Solus | Department of Mathematics | University of Kentucky |
Richard Stanley | Department of Mathematics | Massachusetts Institute of Technology |
Dennis Stanton | School of Mathematics | University of Minnesota, Twin Cities |
John Stembridge | Department of Mathematics | University of Michigan |
Jessica Striker | Department of Mathematics | North Dakota State University |
Andrew Suk | Department of Mathematics, Statistics, and Computer Science | University of Illinois, Chicago |
Laszlo Szekely | Department of Mathematics | University of South Carolina |
Michael Szestopalow | Department of Combinatorics and Optimization | University of Waterloo |
Kaisa Taipale | Department of Mathematics | University of Minnesota, Twin Cities |
Prasad Tetali | School of Mathematics and College of Computing | Georgia Institute of Technology |
Ngoc Mai Tran | Department of Mathematics | University of Texas, Austin |
Mirkó Visontai | Google Inc. | |
Michelle Wachs | Department of Mathematics | University of Miami |
Jing Wang | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Ke Wang | Institute for Mathematics and its Applications | University of Minnesota, Twin Cities |
Russ Woodroofe | Department of Mathematics and Statistics | Mississippi State University |
Jed Yang | Department of Mathematics | University of Minnesota, Twin Cities |
Elyse Yeager | Department of Mathematics | University of Illinois at Urbana-Champaign |
Damir Yeliussizov | Department of Computer Engineering | Kazakh-British Technical University |
Ruriko Yoshida | Department of Statistics | University of Kentucky |
Michael Young | Department of Mathematics | Iowa State University |
Zafeirakis Zafeirakopoulos | Research Institute for Symbolic Computation | Johannes Kepler Universität Linz |
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