Degenerations of invariant Lagrangian manifolds

Journal of Singularities
volume 8 (2014), 50-68

Received: 8 September 2013. Received in revised form: 3 June 2014.

DOI: 10.5427/jsing.2014.8e

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Abstract:

We consider a pair (H, I) where I is an involutive ideal of a Poisson algebra and H in I. We show that if I defines a "2n-gon singularity", then, under arithmetical conditions on H, any deformation of H can be integrated as a deformation of (H, I).

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