Vol. 241, No. 2, 2009

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Virasoro constraints and Hurwitz numbers through asymptotic analysis

Yon-Seo Kim and Kefeng Liu

Vol. 241 (2009), No. 2, 275–284
Abstract

We present a new method, using asymptotic analysis, to obtain a system of recursion relations for integrals on moduli spaces of curves. By applying the asymptotic analysis on the join-cut relation of the ELSV formula, we derive the recursion relation of R. Dijkgraaf and E. and H. Verlinde, which is exactly the Virasoro constraints for topological gravity. This gives an alternative proof of Witten’s Conjecture using asymptotic analysis.

Keywords

Hurwitz, Gromov, Witten, asymptotic, ELSV, Stirling, Witten conjecture, Kontsevich

Mathematical Subject Classification

Primary: 51P05

Secondary: 81R10

Milestones

Received: 24 April 2008
Revised: 27 January 2009
Accepted: 29 January 2009

Authors
Yon-Seo Kim
Department of Mathematics
University of Chicago
Chicago, IL 60637
USA
http://www.math.uchicago.edu/~yskim
Kefeng Liu
Center of Math Sciences
Zhejiang University
Hangzhou, Zhejiang 310027
China
Department of Mathematics
University of California at Los Angeles
Los Angeles, CA 90095-1555
USA
http://www.math.ucla.edu/~liu