Equivariant K-theory of Springer varieties

The aim of this paper is to describe the topological equivariant K-ring, in terms of generators and relations, of a Springer variety F lambda of type A associated to a nilpotent operator having Jordan canonical form whose block sizes form a weakly decreasing sequence lambda = (lambda 1, .. ., lambda l). This parallels the description of the equivariant cohomology ring of F lambda due to Abe and Horiguchi and generalizes the description of ordinary topological K-ring of F lambda due to Sankaran and Uma [13]. (c) 2023 Elsevier B.V. All rights reserved.