Determinantal and Pfaffian formulas of K-theoretic Schubert calculus
Determinantal and Pfaffian formulas of K-theoretic Schubert calculus
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K-理论舒伯特微积分的行列式和普法夫公式
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发表时间:
2015
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通讯作者:
H. Naruse
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作者:
Thomas Hudson;T. Ikeda;T. Matsumura;H. Naruse
In this paper, we prove determinantal and Pfaffian formulas that describe the $K$-theoretic degeneracy loci classes for the Grassmann and the symplectic Grassmann bundles respectively. The former generalizes Kempf-Laksov's determinantal formula and the latter generalizes Kazarian's Pfaffian formula for the Chow rings. An an application, we introduce the factorial $G\Theta$-functions representing the equivariant $K$-theoretic Schubert classes of the symplectic Grassmannians, generalizing the (double) theta polynomials of Buch-Kresch-Tamvakis and Wilson.