ON ALGEBRAS AND GROUPS OF FORMAL SERIES OVER A GROUPOID AND APPLICATION TO SOME SPACES OF COBORDISM

Abstract : We develop here a concept of deformed algebras and their related groups through two examples. Deformed algebras are obtained from a fixed algebra by deformation along a family of indexes, through formal series. We show how the example of deformed algebra used in [23] is only an example among others, and how they often give rise to regular Frölicher Lie groups, and sometimes to Fréchet Lie groups, that are regular. The first example, indexed by N, is obtained by deformations of the gourp of bounded classical pseudo-differential operators Cl 0, * by algebras of (maybe unbounded) classical pseudo-differential operators. In the second one, the set of indexes is a N−graded groupo¨ıdgroupo¨ıd, which is made of manifolds with boundary that are understood as morphisms of cobordisms. Here again, we get regular Lie groups, and we show how this setting applies to a class of examples that are derived of so-called stochastic cosurfaces. MSC(2010): 22E65, 22E66, 58B25, 70G65.
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Contributor : Jean-Pierre Magnot <>
Submitted on : Wednesday, December 19, 2018 - 10:25:09 PM
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Jean-Pierre Magnot. ON ALGEBRAS AND GROUPS OF FORMAL SERIES OVER A GROUPOID AND APPLICATION TO SOME SPACES OF COBORDISM. 2018. ⟨hal-01961439⟩

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