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Noncommutative Geometry for Singular Foliations

"The Baum-Connes conjecture (BC) is a far-reaching generalization of the Atiyah-Singer index theorem. It uses index theory to establish a link (assembly map) between the K-theory of convolution algebras of geometric origin (analyt... ver más

31/08/2013

UOA

50K€

Presupuesto del proyecto: 50K€

Líder del proyecto

ETHNIKO KAI KAPODISTRIAKO PANEPISTIMIO ATHINO... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2013-08-31 No tenemos la información de la convocatoria

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Líder del proyecto

ETHNIKO KAI KAPODISTRIAKO PANEPISTIMIO ATHINO... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 50K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto "The Baum-Connes conjecture (BC) is a far-reaching generalization of the Atiyah-Singer index theorem. It uses index theory to establish a link (assembly map) between the K-theory of convolution algebras of geometric origin (analytical side) with homological invariants of the geometric situation involved (topological side), and conjectures that it is an equivalence. Counterexamples to BC were given by Higson, V. Lafforgue and Skandalis. Even so, the injectivity and surjectivity of the assembly map provide far deeper information for the geometric situation involved, as they imply the validity of the Novikov and the Kadison-Kaplansky conjectures. The purpose of this research proposal is to formulate and study BC for singular foliations. They are the most common ones (e.g. in dynamical systems, control theory, math. physics, Poisson geometry, etc.), and the least well-studied. Particularly, it will show that the injectivity/surjectivity of the assembly map, depends only on its behaviour on each stratum of equal-dimensional leaves. The project will build on important recent results on singular foliations by I. Androulidakis and G. Skandalis. Extending work of Connes on non-Hausdorff groupoids, they attached to a singular foliation the holonomy groupoid and the convolution algebra(s). They also defined the associated longitudinal pseudodifferential calculus and the associated analytic index map. Work of Baum, Connes, Higson, as well as Le Gall and Tu shows that these are all the necessary ingredients to define the assembly map. This 2-years project will be carried out in Greece (Univ. of Athens, Math. Dept.), where Androulidakis holds an Assistant Professorship (tenure). Apart from enhancing Androulidakis' perspective of permanent employment there, it will contribute to the transfer of Androulidakis' long-term European research experience and collaborations to a Less Favoured Region, particularly in a country severely affected by the current economic crisis."

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