An equivariant basis for the cohomology of Springer fibers
An equivariant basis for the cohomology of Springer fibers
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Springer 纤维上同调的等变基础
DOI:
10.1090/btran/57
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发表时间:
2021
影响因子:
1.3
通讯作者:
Richmond, Edward
中科院分区:
文献类型:
--
作者:
Precup, Martha;Richmond, Edward
Springer fibers are subvarieties of the flag variety that play an important role in combinatorics and geometric representation theory. In this paper, we analyze the equivariant cohomology of Springer fibers forusing results of Kumar and Procesi that describe this equivariant cohomology as a quotient ring. We define a basis for the equivariant cohomology of a Springer fiber, generalizing a monomial basis of the ordinary cohomology defined by De Concini and Procesi and studied by Garsia and Procesi. Our construction yields a combinatorial framework with which to study the equivariant and ordinary cohomology rings of Springer fibers. As an application, we identify an explicit collection of (equivariant) Schubert classes whose images in the (equivariant) cohomology ring of a given Springer fiber form a basis. References
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DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
M. Harada;Julianna Tymoczko
通讯作者:
Julianna Tymoczko
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
Lucas Fresse
通讯作者:
Lucas Fresse
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Shrawan Kumar;C. Procesi
通讯作者:
C. Procesi
DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
N. Spaltenstein
通讯作者:
N. Spaltenstein
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
Lucas Fresse
通讯作者:
Lucas Fresse