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Oddification of the Cohomology of Type A Springer Varieties

Oddification of the Cohomology of Type A Springer Varieties

We identify the ring of odd symmetric functions introduced by Ellis and Khovanov as the space of skew polynomials fixed by a natural action of the Hecke algebra at q=−1. This allows us to define graded modules over the Hecke algebra at q=−1 that are “odd” analogs of the cohomology …