Skip to content

Bounds for the Entropy of Graded Algebras

Jan Snellman

math.RAarXiv:math/0209080

Abstract

Newman, Schneider and Shalev defined the entropy of a graded associative algebra A as H(A) = n ∞ [n]an, where an is the vector space dimension of the n'th homogeneous component. When A is the homogeneous quotient of a finitely generated free associative algebra, they showed that H(A) a2. Using some results of Friedland on the maximal spectral radius of 0-1 matrices with a prescribed number of ones, we improve on this bound.

Create a lesson