AMS Special Session on Enumerative and Geometric Combinatorics

AMS Special Session on
Enumerative and Geometric Combinatorics
AMS 2012 Spring Central Section Meeting
University of Kansas, Lawrence, KS
March 30 - April 1, 2012

Deadlines

Deadline for consideration (if not invited) for inclusion in AMS Special Sessions: December 20, 2011.

Schedule of talks

We are planning to have three sessions of 20-minute talks, with 10 minutes between talks.

Where and When

The special session will be on March 31 and April 1, on the campus of University of Kansas . More information is available at KU's Conference Page .

The AMS page about the meeting is 2012 Spring AMS Central Section Meeting

Speakers

Hoda Bidkhori (Massachusetts Institute of Technology), Miklos Bona (University of Florida), Alex Burstein (Howard University), Art Duval (University of Texas at El Paso), Jim Haglund (University of Pennsylvania), Christine Heitsch (Georgia Institute of Technology), Gabor Hetyei (University of North Carolina at Charlotte), Sam Hsiao (Bard College), Jeremy Martin (University of Kansas), Heinrich Niederhausen (Florida Atlantic University), Svetlana Poznanovik (Georgia Institute of Technology), Sarah Crown Rundell (Denison University), Bruce Sagan (Michigan State University), Mirko Visontai (University of Pennsylvania), Michelle Wachs (University of Miami), Jacob White (Arizona State University), Russ Woodroofe (Washington University in St. Louis)

Schedule of talks

Saturday March 31, 2012, 8:00 a.m.-10:50 a.m.
Room 4034, Wescoe Hall

8:00 a.m.
Noncontractibility of the coset lattice of a finite group.
John Shareshian, Washington University in St. Louis
Russ Woodroofe*, Washington University in St. Louis
(1081-05-350)
8:30 a.m.
Complexes of Signed Graphs and Decision Trees.
Jacob A White*, Arizona State University
(1081-05-253)
9:00 a.m.
The Coloring Complex of a Hypergraph.
Sarah Crown Rundell*, Denison University
(1081-05-08)
9:30 a.m.
Cuts and flows in cell complexes, I: Topology and vector space bases.
Art Duval*, University of Texas at El Paso
Caroline Klivans, Brown University
Jeremy Martin, University of Kansas
(1081-05-297)
10:00 a.m.
Cuts and flows in cell complexes, II: Lattices and critical groups.
Art M Duval, University of Texas, El Paso
Caroline J Klivans, Brown University
Jeremy L Martin*, University of Kansas
(1081-05-296)
10:30 a.m.
Peaks and the cd-index.
Samuel K. Hsiao*, Bard College
(1081-05-78)

Saturday March 31, 2012, 11:05 a.m.-11:55 a.m. Invited Address Room 3931, Wescoe Hall
Enumerative combinatorics with fillings of polyominoes.
Catherine Yan*, Texas A&M University (1081-05-04)

Saturday March 31, 2012, 2:30 p.m.-4:20 p.m. Room 4034, Wescoe Hall

2:30 p.m.
Parking Functions in the Representation Theory of Diagonal Harmonics.
J. Haglund*, University of Pennsylvania
(1081-05-45)
3:00 p.m.
Meanders and RNA Folding.
Christine E Heitsch*, Georgia Institute of Technology
(1081-05-300)
3:30 p.m.
A new $q$-analog of the partition lattice.
Julian Moorehead, University of Miami
Michelle L Wachs*, University of Miami
(1081-05-316)
4:00 p.m.
The short toric polynomial and the toric $h$-vector of a simple polytope.
Gábor Hetyei*, University of North Carolina at Charlotte
(1081-05-142)

Sunday April 1, 2012, 8:00 a.m.-11:50 a.m. Room 4034, Wescoe Hall

8:00 a.m.
Ballot Paths Avoiding both Patterns $urru$ and $rur$.
Heinrich Niederhausen*, Florida Atlantic University
(1081-05-119)
8:30 a.m.
Surprising symmetries in objects counted by Catalan numbers.
Miklos Bona*, University of Florida
(1081-05-149)
9:00 a.m.
Permutation Patterns and Statistics.
Bruce E Sagan*, Department of Mathematics, Michigan State University
(1081-05-35)
9:30 a.m.
Dumont permutations with one occurrence of certain 3- and 4-letter patterns.
Alexander Burstein*, Howard University
(1081-05-371)
10:00 a.m.
Cycles and sorting index for permutations and matchings.
Svetlana Poznanovikj*, Georgia Institute of Technology
(1081-05-369)
10:30 a.m.
On the joint distribution of descents and inverse descents.
Mirkó Visontai*, University of Pennsylvania
(1081-05-24)
11:00 a.m.
Lattice Path Matroid Polytopes.
Hoda Bidkhori*, Massachusetts Institute of Technology
(1081-05-402)
11:30 a.m.
Discussion.

Organizers

Margaret Bayer, University of Kansas, bayer at math.ku.edu
Joseph Kung , University of North Texas, kung at unt.edu
Svetlana Poznanovik Georgia Institute of Technology, svetlana at math.gatech.edu
Catherine Yan Texas A&M University, cyan at math.tamu.edu

Registration

There will be a registration fee of about $52 for AMS or CMS members, $72 for nonmembers and $5 for emeritus members, students, or unemployed mathematicians.

Accommodations, and Travel Arrangements

Information is provided at the KU's Conference Page . The links are:

If you have any questions, please contact the organizers.