D. Veer

collaborators

2 papers

math.AC2023

Cohen-Macaulay permutation graphs

P. V. Cheri, Deblina Dey, Akhil K +2

In this article, we characterize Cohen-Macaulay permutation graphs. In particular, we show that a permutation graph is Cohen-Macaulay if and only if it is well-covered and there ex…

math.AC2021

The $h$ -polynomial and the rook polynomial of some polyominoes

Manoj Kummini, Dharm Veer

Let $X$ be a convex polyomino such that its vertex set is a sublattice of $N^{2}$ . Let $k [X]$ be the toric ring (over a field $k$ ) associated to $X$ in the sense of…

Cohen-Macaulay permutation graphs

The h-polynomial and the rook polynomial of some polyominoes

The $h$ -polynomial and the rook polynomial of some polyominoes