Decompositions of Grothendieck Polynomials
Decompositions of Grothendieck Polynomials
复制标题
格洛腾迪克多项式的分解
DOI:
10.1093/imrn/rnx207
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发表时间:
2017
影响因子:
1
通讯作者:
Searles, Dominic
中科院分区:
文献类型:
--
作者:
Pechenik, Oliver;Searles, Dominic
We investigate the long-standing problem of finding a combinatorial rule for the Schubert structure constants in the-theory of flag varieties (in type). The Grothendieck polynomials of A. Lascoux–M.-P. Schützenberger (1982) serve as polynomial representatives for-theoretic Schubert classes; however no positive rule for their multiplication is known in general. We contribute a new basis for polynomials (invariables) which we callglide polynomials, and give a positive combinatorial formula for the expansion of a Grothendieck polynomial in this basis. We then provide a positive combinatorial Littlewood–Richardson rule for expanding a product of Grothendieck polynomials in the glide basis. Our techniques easily extend to the-Grothendieck polynomials of S. Fomin–A. Kirillov (1994), representing classes in connective-theory, and we state our results in this more general context.
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影响因子:
--
作者:
Thomas Hudson
通讯作者:
Thomas Hudson
DOI:
10.37236/5949
发表时间:
2015
期刊:
Electron. J. Comb.
影响因子:
--
作者:
Rebecca Patrias
通讯作者:
Rebecca Patrias
影响因子:
1.7
作者:
Sami H. Assaf;D. Searles
通讯作者:
Sami H. Assaf;D. Searles
影响因子:
0.8
作者:
O. Pechenik;A. Yong
通讯作者:
A. Yong
影响因子:
0.8
作者:
Sara C. Billey;William Jockusch;R. Stanley
通讯作者:
Sara C. Billey;William Jockusch;R. Stanley