3 papers
math.GR2023
Idempotents in the group algebra of the infinite dihedral group
Ivan Dimitrov, Charles Paquette, David Wehlau +1
We prove that over an algebraically closed field of characteristic different from , the group algebra of the infinite dihedral group $D_\inf…
math.CO2014
Sandpiles and Dominos
Laura Florescu, Daniela Morar, David Perkinson +2
We consider the subgroup of the abelian sandpile group of the grid graph consisting of configurations of sand that are symmetric with respect to central vertical and horizontal axe…
math.CO2010
A Note on the Critical Group of a Line Graph
David Perkinson, Nicholas Salter, Tianyuan Xu
This note answers a question posed by Levine in arkiv:math.CO/0906.2809. The main result is Theorem 1 which shows that under certain circumstances a critical group of a directed gr…