Geometric Perspective on Piecewise Polynomiality of Double Hurwitz Numbers
Geometric Perspective on Piecewise Polynomiality of Double Hurwitz Numbers
复制标题
双赫维茨数分段多项式的几何视角
DOI:
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复制
发表时间:
2013
期刊:
影响因子:
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通讯作者:
Steffen Marcus
中科院分区:
文献类型:
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作者:
R. Cavalieri;Steffen Marcus
Abstract We describe double Hurwitz numbers as intersection numbers on the moduli space of curves ${{overline{M}}_{g,n}}$ Using a result on the polynomiality of intersection numbers of psi classes with the Double Ramification Cycle, our formula explains the polynomiality in chambers of double Hurwitz numbers and the wall-crossing phenomenon in terms of a variation of correction terms to the $varphi$ classes. We interpret this as suggestive evidence for polynomiality of the Double Ramification Cycle (which is only known in genera 0 and 1).
DOI:
10.1016/j.jcta.2013.05.010
发表时间:
2013
期刊:
J. Comb. Theory, Ser. A
影响因子:
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作者:
Aaron Bertram;Renzo Cavalieri;Hannah Markwig
通讯作者:
Hannah Markwig