The symplectic mapping class group of double-struck CP2#ndouble-struck CP2with n ≤ 4

Jun Li; Tian Jun Li; Weiwei Wu

doi:10.1307/mmj/1434731926

The symplectic mapping class group of double-struck CP²#ndouble-struck CP²with n ≤ 4

Jun Li, Tian Jun Li, Weiwei Wu

Mathematics

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

In this paper, we prove that the Torelli part of the symplectomorphism groups of the n-point (n ≤ 4) blow-ups of the projective plane is trivial. Consequently, we determine the symplectic mapping class group. It is generated by reflections on Kω-spherical class with zero ω area.

Original language	English (US)
Pages (from-to)	319-333
Number of pages	15
Journal	Michigan Mathematical Journal
Volume	64
Issue number	2
DOIs	https://doi.org/10.1307/mmj/1434731926
State	Published - Jun 1 2015

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© 2015, University of Michigan. All rights reserved.

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