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JOURNALS // Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika // Archive

Vestnik Moskov. Univ. Ser. 1. Mat. Mekh., 2012 Number 4, Pages 14–20 (Mi vmumm507)

This article is cited in 11 papers

Mathematics

Special framed Morse functions on surfaces

E. A. Kudryavtseva

Lomonosov Moscow State University, Faculty of Mechanics and Mathematics

Abstract: Let $M$ be a smooth closed orientable surface. Let $F$ be the space of Morse functions on $M$, and $\mathbb{F}^1$ be the space of framed Morse functions, both endowed with the $C^\infty$-topology. The space $\mathbb{F}^0$ of special framed Morse functions is defined. We prove that the inclusion mapping $\mathbb{F}^0\hookrightarrow\mathbb{F}^1$ is a homotopy equivalence. In the case when at least $\chi(M)+1$ critical points of each function of $F$ are labeled, the homotopy equivalences $\widetilde{\mathbb{K}}\sim\widetilde{\mathcal{M}}$ and $F\sim\mathbb{F}^0\sim\mathscr{D}^0\times\widetilde{\mathbb{K}}$ are proved, where $\mathbb{K}$ is the complex of framed Morse functions, $\widetilde{\mathcal{M}}\approx\mathbb{F}^1/\mathscr{D}^0$ is the universal moduli space of framed Morse functions, $\mathscr{D}^0$ is the group of self-diffeomorphisms of $M$ homotopic to the identity.

Key words: Morse function, framed Morse function, complex of framed Morse functions, $C^\infty$-topology, universal moduli space.

UDC: 515.164.174, 515.122.55

Received: 10.06.2011


 English version:
Moscow University Mathematics Bulletin, Moscow University Mеchanics Bulletin, 2012, 67:4, 151–157

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