Relative Gromov-Witten invariants and symplectic field theory
-- Eric Katz 

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 The Relative Gromov-Witten
invariants of Li and the Symplectic Field Theory of Eliashberg, Givental, and
Hofer are approaches to relative maps.  We study the geometry of the moduli
space of relative stable morphisms to construct a formalism of relative GW
invariants analogous to SFT, including a homology theory.