6533b871fe1ef96bd12d0daf

RESEARCH PRODUCT

A rigidity theorem for Lagrangian deformations

Mauricio Garay

subject

Algebra and Number TheoryRigidity (electromagnetism)Integrable systemInverse problem for Lagrangian mechanicsInfinitesimalLagrangian systemMathematical analysisComplete intersectionMathematics::Symplectic GeometryGauge symmetryMathematicsSymplectic geometry

description

We consider deformations of singular Lagrangian varieties in symplectic manifolds. We prove that a Lagrangian deformation of a Lagrangian complete intersection is analytically rigid provided that this is the case infinitesimally. This result is given as a consequence of the coherence of the direct image sheaves of relative infinitesimal Lagrangian deformations.

https://doi.org/10.1112/s0010437x05001478