Sinks in acyclic orientations of graphs

A Chromatic Symmetric Function in Noncommuting Variables

Journal of Algebraic Combinatorics: An International Journal

Chromatic Roots are Dense in the Whole Complex Plane

Combinatorics, Probability and Computing

The Topology of the Coloring Complex

Journal of Algebraic Combinatorics: An International Journal

The Hopf algebra of uniform block permutations

Journal of Algebraic Combinatorics: An International Journal

Zero-free regions for multivariate Tutte polynomials (alias Potts-model partition functions) of graphs and matroids

Journal of Combinatorial Theory Series B