Bivariate Order Polynomials

Matthias Beck, Maryam Farahmand, Gina Karunaratne +1

Motivated by Dohmen-Pönitz-Tittmann's bivariate chromatic polynomial ${\chi }_G(x,y)$, which counts all $x$-colorings of a graph $G$ such that adjacent vertices get different colors if t…