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The Diffeomorphism Type of Canonical Integrations of Poisson Tensors on Surfaces
Published online by Cambridge University Press: 20 November 2018
Abstract
A surface $\sum$ endowed with a Poisson tensor
$\pi$ is known to admit a canonical integration,
$G\left( \pi \right)$, which is a 4-dimensional manifold with a (symplectic) Lie groupoid structure. In this short note we show that if
$\text{ }\!\!\pi\!\!\text{ }$ is not an area form on the 2-sphere, then
$G\left( \pi \right)$ is diffeomorphic to the cotangent bundle
$T*\sum$. This extends results by the author and by Bonechi, Ciccoli, Staffolani, and Tarlini.
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- Copyright © Canadian Mathematical Society 2015