bigrassmannianとは 意味・読み方・使い方

形容詞

bigrassmannian (not comparable)

1. (mathematics) Pertaining to a permutation such that there is at most one left and one right descent (at most one index i かつ one index j, such that ws_i < w かつ s_jw < w).
   • 2015, Alexander B. Goncharov, “Exponential complexes, period morphisms, and characteristic classes”, in arXiv‎^[1]:

     Combining this with the construction of Chern classes with coefficients in the bigrassmannian complexes, we get, for the weights up to four, local explicit formulas for the Chern classes in the rational Deligne cohomology via polylogarithms.