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bigradings

  1. plural of bigrading
    • 2015, Gwyn Bellamy, Travis Schedler, “Kostka polynomials from nilpotent cones and Springer fiber cohomology”, in arXiv[1]:
      This can be viewed as a bigrading on the cohomology of the flag variety; via W-algebras, we similarly obtain bigradings on the cohomology of all Springer fibers.