Lagrangian Floer theory over integers: spherically positive symplectic manifolds

Details Lagrangian Floer theory over integers: spherically positive symplectic manifolds Lagrangian Floer theory over integers: spherically positive symplectic manifolds

2011-05-25

arxiv.org/abs/1105.5124v1

Mathematics

Symplectic Geometry

68 pages; 4 figures

Scientific paper

In this paper we study the Lagrangian Floer theory over $\Z$ or $\Z_2$. Under an appropriate assumption on ambient symplectic manifold, we show that the whole story of Lagrangian Floer theory in \cite{fooo-book} can be developed over $\Z_2$ coefficients, and over $\Z$ coefficients when Lagrangian submanifolds are relatively spin. The main technical tools used for the construction are the notion of the sheaf of groups, and stratification and compatibility of the normal cones applied to the Kuranishi structure of the moduli space of pseudo-holomorphic discs.

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