Motivic classes of degeneracy loci and pointed Brill‐Noether varieties
Motivic classes of degeneracy loci and pointed Brill‐Noether varieties
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简并位点和尖头布里尔-诺特变体的动机类别
DOI:
10.1112/jlms.12547
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Tarasca, Nicola
中科院分区:
文献类型:
--
作者:
Anderson, Dave;Chen, Linda;Tarasca, Nicola
Motivic Chern and Hirzebruch classes are polynomials with K‐theory and homology classes as coefficients, which specialize to Chern–Schwartz–MacPherson classes, K‐theory classes, and Cappell–Shaneson L‐classes. We provide formulas to compute the motivic Chern and Hirzebruch classes of Grassmannian and vexillary degeneracy loci. We apply our results to obtain the Hirzebruch χy$\chi _y$‐genus of classical and one‐pointed Brill–Noether varieties, and therefore their topological Euler characteristic, holomorphic Euler characteristic, and signature.
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