2018

Virtual Combinatorics Colloquia:

November 14, 2018:

Vic Reiner (University of Minnesota) "Cyclic sieving: old and new"

October 25, 2018:

Vašek Chvátal (Concordia University - emeritus) "Points and Lines"

April 20, 2018:

Jessica Striker (North Dakota State University) "Local actions create global change"

March 16, 2018:

Joanna Ellis-Monaghan (St. Michael's College) "New dualities from old: Generating geometric, Petrie, and Wilson dualities and trialities of ribbon graphs"

William J. Martin (Worcester Polytechnic Institute) "Ideals of combinatorial designs"

Fall Discrete Math Day in Rhode Island (September 2018):

Sarah-Marie Belcastro (Smith College) *Slides not available*

Padraig Ó Catháin (Worcester Polytechnic Institute) "Morphisms of of Complex Hadamard Matrices"

Lenore Cowen (Tufts University) *Slides not available*

Sandra Kingan (Brooklyn College) "Excluded Minor Results in Matroids"

Bruce Sagan (Michigan State University) "Combinatorial Interpretations for Lucas Analogues"

Summer Combo in Vermont (July 2018):

Amir Barghi (Saint Michael's College) "Stirling Numbers of the First Kind for Graphs"

Zhongyuan Che (Pennsylvania State University, Beaver Campus) "A Decomposition Structure of Resonance Graphs of Plane Elementary Bipartite Graphs"

Sally Cockburn (Hamilton College) "Homomorphic Preimages of Geometric Paths"

Jonathan L. Gross (Columbia University) "Partial Duals of Orientable Embeddings"

John Schmitt (Middlebury College) "Distinct Partial Sums in Finite Cyclic Groups"

Tom Tucker (Colgate University, Emeritus) "Distinguishing"

Susan G. Williams (University of South Alabama) "Tangles and Links: A View with Trees"