# Contributed posters

We are offering to all FPSAC poster presenters the option to email us a PDF of your poster in advance, so we can print it here and have it ready for you by the start of the conference. See poster instructions for more detail.

The poster sessions will be on Monday and Tuesday from 5:15 to 7pm in Occom Commons.

**Presenters** in bold

### Monday session (July 16)

Monday session (July 16)

- The canonical join complex for biclosed sets; Alexander Clifton, Peter Dillery and
**Alexander Garver** - On the Lattice Property of Shard Orders;
**Henri Mühle** - Shuffle-compatible descent statistics and quotients of quasisymmetric functions; Ira Gessel and
**Yan Zhuang** - Fighting fish and two-stack sortable permutations;
**Wenjie Fang** - The number of cycles with a given descent set; Sergi Elizalde and
**Justin Troyka** - Schur polynomials, entrywise positivity preservers, and weak majorization;
**Apoorva Khare**and Terence Tao - Schur-positivity of Equitable Ribbons;
**Foster Tom**and Stephanie van Willigenburg - Description of crystals for generalized Kac--Moody algebras using rigged configurations; Ben Salisbury and
**Travis Scrimshaw** - Semistable subcategories for tiling algebras;
**Monica Garcia**and Alexander Garver - The unipotent modules of GL_n(F_q) via tableaux;
**Scott Andrews** - Proof of Chapoton's conjecture on Newton polytopes of q-Ehrhart polynomials; Jang soo Kim and
**U-keun Song** - Cylindric Reverse Plane Partitions and 2D TQFT;
**David Palazzo** - Variations of the Catalan numbers from some nonassociative binary operations;
**Nickolas Hein**and Jia Huang - The decomposition of 0-Hecke modules associated to quasisymmetric Schur functions;
**Sebastian König** - A formula for birational rowmotion on rectangles;
**Tom Roby**and Gregg Musiker - Convergence of uniform noncrossing partitions toward the Brownian triangulation;
**Jeremie Bettinelli** - Stability of the Heisenberg product on symmetric functions;
**Li Ying** - Parking Functions on Oriented Trees;
**Westin King**and Catherine Yan - Reverse plane partitions of skew staircase shapes and q-Euler numbers; Byung-hak Hwang, Jang Soo Kim, Meesue Yoo and
**Sun-mi Yun** - Combinatorics of X-variables in Finite Type Cluster Algebras;
**Melissa Sherman-Bennett** - On positroids induced by rational Dyck paths;
**Felix Gotti** - Enumerative Combinatorics of Prographs;
**Christophe Cordero** - Algebraic structures on integer posets;
**Viviane Pons**and Vicent Pilaud - Crystals and Schur P-positive expansions;
**Seung-Il Choi**and Jae-Hoon Kwon - Topology of Posets with Special Partial Matchings; Nancy Abdallah,
**Mikael Hansson**and Axel Hultman - A parking function interpretation for nabla m_{n,1^k};
**Emily Sergel** - P-Partition Generating Function Equivalence of Naturally Labeled Posets; Ricky Liu and
**Michael Weselcouch** - The Canonical Join Complex of the Tamari lattice;
**Emily Barnard** - The center of the twisted Heisenberg category, factorial P-Schur functions, and transition functions on the Schur graph; Henry Kvinge, Can Oguz and
**Michael Reeks** - Doppelgangers: The Ur-operation and Posets of Bounded Height;
**Nathaniel Hopkins**, Thomas Browning and Zander Kelley - Crystal graphs, key tabloids, and nonsymmetric Macdonald polynomials; Sami Assaf and
**Nicolle Gonzalez** - Macpherson's conjecture holds: The orbit algebra of a permutation group with polynomial profile is finitely generated; Nicolas M. Thiéry and
**Justine Falque** - The volume of the caracol polytope; Carolina Benedetti, Rafael S. González D'León, Christopher Hanusa, Pamela E. Harris, Apoorva Khare, Alejandro Morales and
**Martha Yip** - Whitney labelings and 0-Hecke algebra actions on graded posets;
**Rafael S. González D'León**and Joshua Hallam - Cluster fan of
**z**-vectors and toric degenerations;**Gleb Koshevoy**

### Tuesday session (July 17)

Tuesday session (July 17)

- A bijective proof and generalization of Siladic's theorem;
**Isaac Konan** - Ordered set partitions and the 0-Hecke algebra;
**Jia Huang**and Brendon Rhoades - Differential posets, Cayley graphs, and critical groups; Ayush Agarwal and
**Christian Gaetz** - One-dimensional packing: maximality implies rationality;
**James Propp** - Cyclically Symmetric Lozenge Tilings of a Hexagon with Four Holes;
**Tri Lai**and Ranjan Rohatgi - On a variant of Lie_n;
**Sheila Sundaram** - Crystal graphs for shifted tableaux;
**Ezgi Kantarci**and Sami Assaf - Hook length property of d-complete posets via q-integrals; Jang Soo Kim and
**Meesue Yoo** - Generalized nil-Coxeter algebras;
**Apoorva Khare** - Decorated Dyck paths and the Delta conjecture; Michele D'Adderio and
**Anna Vanden Wyngaerd** - PBW bases and marginally large tableaux in types B and C;
**Jackson Criswell**, Ben Salisbury and Peter Tingley - Increasing Labelings, Generalized Promotion and Rowmotion;
**Kevin Dilks**, Jessica Striker and Corey Vorland - Macdonald cumulants and G--parking functions;
**Maciej Dołęga** - Enumerating permutations sortable by k passes through a pop-stack;
**Anders Claesson**and Bjarki Ágúst Guðmundsson - Connectivity Properties of Factorization Posets in Generated Groups;
**Henri Mühle**and Vivien Ripoll - A labelled variant of the matchings-Jack and hypermap-Jack conjectures;
**Andrei Kanunnikov**, Valentin Promyslov and Ekaterina Vassilieva - K-theoretic Pieri rule via iterated residues;
**Justin Allman**and Richard Rimanyi - Prism Tableaux for Alternating Sign Matrix Varieties;
**Anna Weigandt** - Combinatorial bases of polynomials;
**Dominic Searles** - Eulerian polynomials on segmented permutations;
**Arthur Nunge** - On e-positivity and e-unimodality of chromatic quasisymmetric functions; Soojin Cho and
**Jisun Huh** - On cyclic descents for tableaux;
**Ron Adin**, Victor Reiner and Yuval Roichman - Action of the symmetric group on the free LAnKe: a CataLAnKe Theorem;
**Tamar Friedmann**, Philip Hanlon, Richard Stanley and Michelle Wachs - On the number of λ-unimodal involutions;
**Kassie Archer**, Angela Gay, Marin King, L.-K. Lauderdale, Thomas Lupo, Gin Privett and Francesca Rossi - Hypergraphic polytopes: combinatorial properties and antipodes; Carolina Benedetti, Nantel Bergeron and
**John Machacek** - Bases of the quantum matrix bialgebra and induced sign characters of the Hecke algebra; Ryan Kaliszewski, Justin Lambright and
**Mark Skandera** - Delta Operators at q=1 and polyominoes;
**Marino Romero**and Angela Hicks - A Pieri Rule for key polynomials; Sami Assaf and
**Danjoseph Quijada** - New properties of the Edelman-Greene bijection;
**Samu Potka**and Svante Linusson - Genus From Sandpile Torsor;
**Alex McDonough** - Product formulas for standard tableaux of a family of skew shapes;
**Alejandro Morales**, Igor Pak and Greta Panova - On the Schur expansion of Jack polynomials; Per Alexandersson, James Haglund and
**George Wang** - Dual Equivalence Graphs and CAT(0) Combinatorics;
**Anastasia Chavez**and John Guo - A Schur-Weyl like construction of the rectangular representation for the double affine Hecke algebra; David Jordan and
**Monica Vazirani**