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arXiv · 1307.6320

Adiabatic groupoid, crossed product by $\R_+^*$ and Pseudodifferential calculus

Claire Debord·Georges Skandalis
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Abstract

We consider the crossed product $G_{ga}$ by $\R_+^*$ of the adiabatic groupoid associated with any Lie groupoid $G$. We construct an explicit Morita equivalence between the exact sequence of order 0 pseudodifferential operators on $G$ and (a restriction of) the natural exact sequence associated with $G_{ga}$. As an important intermediate step, we express a pseudodifferential operator on $G$ as an integral associated to a smoothing operator on the adiabatic groupoid $G_{ad}$ of $G$.

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Claire Debord, Georges Skandalis. 2013-10-09. Adiabatic groupoid, crossed product by $\R_+^*$ and Pseudodifferential calculus. https://arxiv.org/abs/1307.6320

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