Cohen Lenstra Partitions and Mutually Annihilating Matrices over a Finite Field

Abstract

Motivated by questions in algebraic geometry, Yifeng Huang recently derived generating functions for counting mutually annihilating matrices and mutually annihilating nilpotent matrices over a finite field. We give a different derivation of his results using statistical properties of random partitions chosen from the Cohen-Lenstra measure.

arXiv comment6 pages