Frobenius map for the centers of Hecke algebras
arXiv:1208.4446
Abstract
We introduce a commutative associative graded algebra structure on the direct sum Z of the centers of the Hecke algebras associated to the symmetric groups in n letters for all n. As a natural deformation of the classical construction of Frobenius, we establish an algebra isomorphism from the algebra Z to the ring of symmetric functions. This isomorphism provides an identification between several distinguished bases for the centers (introduced by Geck-Rouquier, Jones, Lascoux) and explicit bases of symmetric functions.
arXiv comment15 pages, v2, updated introduction, mild corrections of typos, to appear in Transactions of the American Mathematical Society