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Эта публикация цитируется в 14 научных статьях (всего в 14 статьях)
Toda Equations and Piecewise Polynomiality for Mixed Double Hurwitz Numbers
I. P. Gouldena, Mathieu Guay-Paquetb, Jonathan Novakc a Department of Combinatorics and Optimization, University of Waterloo,
200 University Ave. W., Waterloo, ON, N2L 3G1 Canada
b Département de mathématiques, Université du Québec à Montréal, C.P. 8888, succ. Centre-ville, Montréal, Québec, H3C 3P8 Canada
c Department of Mathematics, University of California San Diego,
9500 Gilman Drive, La Jolla, CA 92093-0404 USA
Аннотация:
This article introduces mixed double Hurwitz numbers, which interpolate combinatorially between the classical double Hurwitz numbers studied by Okounkov and the monotone double Hurwitz numbers introduced recently by Goulden, Guay-Paquet and Novak. Generalizing a result of Okounkov, we prove that a certain generating series for the mixed double Hurwitz numbers solves the 2-Toda hierarchy of partial differential equations. We also prove that the mixed double Hurwitz numbers are piecewise polynomial, thereby generalizing a result of Goulden, Jackson and Vakil.
Ключевые слова:
Hurwitz numbers; Toda lattice.
Поступила: 2 февраля 2016 г.; в окончательном варианте 13 апреля 2016 г.; опубликована 20 апреля 2016 г.
Образец цитирования:
I. P. Goulden, Mathieu Guay-Paquet, Jonathan Novak, “Toda Equations and Piecewise Polynomiality for Mixed Double Hurwitz Numbers”, SIGMA, 12 (2016), 040, 10 pp.
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/sigma1122 https://www.mathnet.ru/rus/sigma/v12/p40
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