Contact homology is a powerful invariant of contact manifolds introduced by Eliashberg--Givental--Hofer. The definition involves certain counts of pseudo-holomorphic curves, however these are usually only "virtual" counts since the moduli spaces of such curves are often not cut out transversally. I will discuss one way to construct these counts rigorously.
Contact homology and virtual fundamental cycles
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Nom de l'orateur
John Pardon
Etablissement de l'orateur
Stanford
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