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math.DG2004
Contact reduction and groupoid actions
Marco Zambon, Chenchang Zhu
We introduce a new method to perform reduction of contact manifolds that extends Willett's (math.SG/0104080) and Albert's results. To carry out our reduction procedure all we need…
math.DG2002
Submanifold averaging in riemannian and symplecitc geometry
Marco Zambon
We give a construction to obtain canonically an ``isotropic average'' of given -close isotropic submanifolds of a symplectic manifold. To do so we use an improvement of Weinst…