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Combinatorial Floer homology

About this Title

Vin de Silva, Pomona College, Joel W. Robbin, University of Wisconsin and Dietmar A. Salamon, ETH-Zürich

Publication: Memoirs of the American Mathematical Society
Publication Year: 2014; Volume 230, Number 1080
ISBNs: 978-0-8218-9886-4 (print); 978-1-4704-1670-6 (online)
DOI: https://doi.org/10.1090/memo/1080
Published electronically: December 10, 2013
MSC: Primary 57R58; Secondary 57R42

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Table of Contents

Chapters

  • 1. Introduction

Part I. The Viterbo–Maslov Index

  • 2. Chains and Traces
  • 3. The Maslov Index
  • 4. The Simply Connected Case
  • 5. The Non Simply Connected Case

Part II. Combinatorial Lunes

  • 6. Lunes and Traces
  • 7. Arcs
  • 8. Combinatorial Lunes

Part III. Floer Homology

  • 9. Combinatorial Floer Homology
  • 10. Hearts
  • 11. Invariance under Isotopy
  • 12. Lunes and Holomorphic Strips
  • 13. Further Developments

Appendices

  • A. The Space of Paths
  • B. Diffeomorphisms of the Half Disc
  • C. Homological Algebra
  • D. Asymptotic behavior of holomorphic strips

Abstract

We define combinatorial Floer homology of a transverse pair of noncontractible nonisotopic embedded loops in an oriented $2$-manifold without boundary, prove that it is invariant under isotopy, and prove that it is isomorphic to the original Lagrangian Floer homology. Our proof uses a formula for the Viterbo-Maslov index for a smooth lune in a $2$-manifold.

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References

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