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Moduli spaces of spacefilling branes in symplectic 4-manifolds

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arxiv 2501.07926 v2 pith:FT4ASZEG submitted 2025-01-14 math.SG math.AGmath.DG

classification math.SGmath.AGmath.DG
keywords symplecticspacefillingbranesholomorphicmanifoldsmoduliomegastructure
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abstract

On a symplectic manifold $(M, \omega)$, a spacefilling brane structure is a closed 2-form $F$ which determines a complex structure, with respect to which $F +i\omega$ is holomorphic symplectic. For holomorphic symplectic compact K\"ahler 4-manifolds, we show that the moduli space of spacefilling branes is smooth, and determine its dimension. The proof relies on the local Torelli theorem for K3 surfaces and tori.

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  1. Coisotropic branes in symplectic manifolds

    math.SG 2025-07 conditional novelty 7.0 of 10

    The authors develop a deformation theory for coisotropic branes, explicitly describing nearby branes in a codimension-one model and showing that the forgetful map from branes to coisotropic submanifolds is not locally...

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