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Resumen de Fredholm theory and transversality for the parametrized and for the S1-invariant symplectic action

Frédéric Bourgeois, Alexandru Oancea

  • We study the parametrized Hamiltonian action functional for finite-dimensional families of Hamiltonians. We show that the linearized operator for the L2-gradient lines is Fredholm and surjective, for a generic choice of Hamiltonian and almost complex structure. We also establish the Fredholm property and transversality for generic S1-invariant families of Hamiltonians and almost complex structures, parametrized by odd-dimensional spheres. This is a foundational result used to define S1-equivariant Floer homology. As an intermediate result of independent interest, we generalize Aronszajn�s unique continuation theorem to a class of elliptic integro-differential inequalities of order two.


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