Floer homology of families I

Hutchings, Michael

doi:10.2140/agt.2008.8.435

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Floer homology of families I

Michael Hutchings

Algebraic & Geometric Topology 8 (2008) 435–492

DOI: 10.2140/agt.2008.8.435

Abstract

In principle, Floer theory can be extended to define homotopy invariants of families of equivalent objects (eg Hamiltonian isotopic symplectomorphisms, $3$ –manifolds, Legendrian knots, etc.) parametrized by a smooth manifold $B$ . The invariant of a family consists of a filtered chain homotopy type, which gives rise to a spectral sequence whose $E^{2}$ term is the homology of $B$ with local coefficients in the Floer homology of the fibers. This filtered chain homotopy type also gives rise to a “family Floer homology” to which the spectral sequence converges. For any particular version of Floer theory, some analysis needs to be carried out in order to turn this principle into a theorem. This paper constructs the invariant in detail for the model case of finite dimensional Morse homology, and shows that it recovers the Leray–Serre spectral sequence of a smooth fiber bundle. We also generalize from Morse homology to Novikov homology, which involves some additional subtleties.

Keywords

Floer homology

Mathematical Subject Classification 2000

Primary: 57R58

References

Publication

Received: 8 November 2007

Accepted: 2 January 2008

Published: 12 May 2008

Authors

Michael Hutchings
Mathematics Department 970 Evans Hall University of California Berkeley, CA 94720
http://math.berkeley.edu/~hutching

Volume 8, issue 1 (2008)