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Leafwise fixed points for C0-small hamiltonian flows

Authors :
Ziltener, Fabian
Sub Fundamental Mathematics
Fundamental mathematics
Sub Fundamental Mathematics
Fundamental mathematics
Source :
International Mathematics Research Notices, 2019(8), 2411. Oxford University Press
Publication Year :
2019

Abstract

Consider a closed coisotropic submanifold $N$ of a symplectic manifold $(M,\omega)$ and a Hamiltonian diffeomorphism $\phi$ on $M$. The main result of this article states that $\phi$ has at least the cup-length of $N$ many leafwise fixed points w.r.t. $N$, provided that it is the time-1-map of a global Hamiltonian flow whose restriction to $N$ stays $C^0$-close to the inclusion $N\to M$. If $(\phi,N)$ is suitably nondegenerate then the number of these points is bounded below by the sum of the Betti-numbers of $N$. The nondegeneracy condition is generically satisfied. This appears to be the first leafwise fixed point result in which neither $\phi\big|_N$ is assumed to be $C^1$-close to the inclusion $N\to M$, nor $N$ to be of contact type or regular (i.e., "fibering"). It is optimal in the sense that the $C^0$-condition on $\phi$ cannot be replaced by the assumption that $\phi$ is Hofer-small.<br />Comment: 37 pages, accepted by IMRN. I have removed the part on local coisotropic Floer homology and made this a separate article

Details

Language :
English
ISSN :
10737928
Database :
OpenAIRE
Journal :
International Mathematics Research Notices, 2019(8), 2411. Oxford University Press
Accession number :
edsair.doi.dedup.....68e60380b4ace5add8793498e4c6b2fc