Posters Scheduled For Tuesday, June 20, 2006 On the complexity of computing Kostka numbers and Littlewood- Richardson coefficients Hariharan Narayanan Overpartitions, lattice paths and Rogers-Ramanujan identities Sylvie Corteel and Olivier Mallet Bijections of trees arising from Voiculescu's free probability theory Artur Jez and Piotr Sniady [Electronic Version of Poster] Schubert polynomials for the affine Grassmannian Thomas Lam Counting unrooted hypermaps on closed orientable surface Alexander Mednykh and Roman Nedela Algebraic shifting of cyclic polytopes and stacked polytopes Satoshi Murai Macdonald polynomials at roots of unity Francois Descouens and Hideaki Morita Enumeration of Bruhat intervals between nested involutions in $S_{n}$ Alessandro Conflitti Area of Catalan Paths on a Checkerboard Szu-En Cheng, Sen-Peng Eu and Tung-Shan Fu The Andrews-Stanley partition function and Al-Salam-Chihara polynomials Masao Ishikawa and Jiang Zeng Kazhdan-Lusztig immanants and products of matrix minors, II Brendon Rhoades and Mark Skandera A Spectral Approach to Pattern-Avoiding Permutations Richard Ehrenborg, Sergey Kitaev and Peter Perry Pieri's Formula for Generalized Schur Polynomials Yasuhide Numata Enriched $P$-partitions and peak algebras of types A and B T. Kyle Petersen Conjugacy in Permutation Representations of the Symmetric Group Yona Cherniavsky and Mishael Sklarz Algebraic structures on Grothendieck groups of a tower of algebras Huilan Li [Electronic Version of Poster with guide] The Chromatic Symmetric Function of Symmetric and Near-Symmetric Caterpillars Matthew Morin Statistics on Signed Permutations Groups Micharl Fire An algorithm to describe bijections involving Dyck paths Yvan Le Borgne On bar partitions and spin character zeros Christine Bessenrodt Posters Scheduled For Thursday, June 22, 2006 A new construction of the Loday-Ronco algebra Maxime Rey Graded Graphs and Fomin's $r$-correspondences associated to the Hopf Algebras of Planar Binary Trees, Quasi-symmetric Functions and Noncommutative Symmetric Functions Janvier Nzeutchap Strong Descent Numbers and Turán Type Theorems Ron M. Adin and Yuval Roichman Green polynomials at roots of unity and its application Hideaki Morita New results on the combinatorial invariance of KL-polynomials Federico Incitti The number of Z-convex polyominoes Enrica Duchi, Simone Rinaldi and Gilles Schaeffer A Rook Theory Model for the Generalized p,q-Stirling Numbers of the First and Second Kind Karen Briggs Hankel Determinants for Some Common Lattice Paths Robert Sulanke and Guoce Xin General Augmented Rook Boards & Product Formulas Brian Miceli Some Expansions of the Dual Basis of $Z_{\lambda}$ Amanda Riehl The $m$-colored composition poset Brian Drake and T. Kyle Petersen A general bijection for a class of walks on the slit plane Philippe Nadeau Enumerating Bases of Self-Dual Matroids Molly Maxwell Classifying ascents and descents with specified equivalences mod k Jeffrey Liese A Labelling of the Faces in the Shi Arrangement Felipe Rincon Restricted Dumont permutations, Dyck paths, and noncrossing partitions Alexander Burstein, Sergi Elizalde and Toufik Mansour Restricted Patience Sorting and Pattern Avoidance Alexander Burstein and Isaiah Lankham Octahedrons with equally many lattice points and generalizations Thomas Stoll and Robert F. Tichy Pattern avoiding doubly alternating permutations Erik Ouchterlony "Elliptic" enumeration of nonintersecting lattice paths Michael Schlosser