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Combinatorial Floer homology

About this Title

Vin de Silva, Joel W. Robbin and Dietmar A. Salamon

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)
Published electronically: December 10, 2013

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Table of Contents


  • Chapter 1. Introduction
  • Chapter 2. Chains and Traces
  • Chapter 3. The Maslov Index
  • Chapter 4. The Simply Connected Case
  • Chapter 5. The Non Simply Connected Case
  • Chapter 6. Lunes and Traces
  • Chapter 7. Arcs
  • Chapter 8. Combinatorial Lunes
  • Chapter 9. Combinatorial Floer Homology
  • Chapter 10. Hearts
  • Chapter 11. Invariance under Isotopy
  • Chapter 12. Lunes and Holomorphic Strips
  • Chapter 13. Further Developments
  • Appendix A. The Space of Paths
  • Appendix B. Diffeomorphisms of the Half Disc
  • Appendix C. Homological Algebra
  • Appendix D. Asymptotic behavior of holomorphic strips


We define combinatorial Floer homology of a transverse pair of noncontractible nonisotopic embedded loops in an oriented -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 -manifold.

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