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Hurwitz numbers for generalised polynomials and two-pointed ramification cycles
Stockholm University, Faculty of Science, Department of Mathematics.
2003 In: Russian Mathematical Surveys, ISSN 1468-4829, Vol. 58, no 1, 195-196 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2003. Vol. 58, no 1, 195-196 p.
Identifiers
URN: urn:nbn:se:su:diva-23314OAI: oai:DiVA.org:su-23314DiVA: diva2:191342
Note
Part of urn:nbn:se:su:diva-238Available from: 2004-09-10 Created: 2004-09-10Bibliographically approved
In thesis
1. Intersections on moduli spaces of curves
Open this publication in new window or tab >>Intersections on moduli spaces of curves
2004 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

We present a new approach to perform calculations with the certain standard classes in cohomology of the moduli spaces of curves. It is based on an important lemma of Ionel relating the intersection theoriy of the moduli space of curves and that of the space of admissible coverings. As particular results, we obtain expressions of Hurwitz numbers in terms of the intersections in the tautological ring, expressions of the simplest intersection numbers in terms of Hurwitz numbers, an algorithm of calculation of certain correlators which are the subject of the Witten conjecture, an improved algorithm for intersections related to the Boussinesq hierarchy, expressions for the Hodge integrals over two-pointed ramification cycles, cut-and-join type equations for a large class of intersection numbers, etc.

Place, publisher, year, edition, pages
Stockholm: Matematiska institutionen, 2004. 3 p.
Keyword
Mathematics
Identifiers
urn:nbn:se:su:diva-238 (URN)91-7265-933-5 (ISBN)
Public defence
2004-10-01, sal 14, hus 5, Kräftriket, Stockholm, 10:15
Opponent
Supervisors
Available from: 2004-09-10 Created: 2004-09-10Bibliographically approved

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