Geodesic

Gröbner Basis Techniques in Algebraic Combinatorics
Number of "udu"s of a Dyck Path and ad-Nilpotent Ideals of Parabolic Subalgebras of sll+1(C)
Counting Multiderangements by Excedances
Solution to a Combinatorial Puzzle Arising from Mayer's Theory of Cluster Integrals
Keys and Alternating Sign Matrices
Actions of the Symmetric Group Generated by Comparable Sets of Integers and Smith Invariants