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We prove in this paper that the periodic cyclic homology of the quantized algebras of functions on coadjoint orbits of connected and simply connected Lie group, are isomorphic to the periodic cyclic homology of the quantized algebras of…

Quantum Algebra · Mathematics 2007-05-23 Do Ngoc Diep , Aderemi O. Kuku

We construct, study, and apply a characteristic map from the relative periodic cyclic homology of the quotient map for a group action to the periodic Hopf-cyclic homology with coefficients associated with inertia of the action. This result…

K-Theory and Homology · Mathematics 2021-01-20 Tomasz Maszczyk , Serkan Sütlü

We study differential operators on complete Riemannian manifolds which act on sections of a bundle of finite type modules over a von Neumann algebra with a trace. We prove a relative index and a Callias-type index theorems for von Neumann…

Differential Geometry · Mathematics 2016-02-23 Maxim Braverman , Simone Cecchini

The aim of this paper is to show how zeta functions and excision in cyclic cohomology may be combined to obtain index theorems. In the first part, we obtain a local index formula for "abstract elliptic pseudodifferential operators"…

K-Theory and Homology · Mathematics 2013-09-11 Rudy Rodsphon

In this paper, we introduce a new homology theory devoted to the study of linear operators such as local mutipliers and band preserving operators. The idea is to study the vanishing homology problem. This enables us to characterize integral…

Functional Analysis · Mathematics 2011-04-06 Mouadh Akriche , Mohamed Ali Toumi

In the setting of several commuting operators on a Hilbert space one defines the notions of invertibility and Fredholmness in terms of the associated Koszul complex. The index problem then consists of computing the Euler characteristic of…

K-Theory and Homology · Mathematics 2012-10-24 Jens Kaad , Ryszard Nest

Let $M$ be a complex manifold and $S\subset M$ a (possibly singular) subvariety of $M$. Let $f\colon M\to M$ be a holomorphic map such that $f$ restricted to $S$ is the identity. We show that one can associate to $f$ a holomorphic section…

Dynamical Systems · Mathematics 2007-05-23 Marco Abate , Filippo Bracci , Francesca Tovena

We review an approach to the index theory of operator algebras associated with Lie groups of quantized canonical transformations. Main points are an ellipticity condition ensuring the Fredholm property, the definition of localized algebraic…

Operator Algebras · Mathematics 2019-08-29 Anton Savin , Elmar Schrohe

We present the solution of a longstanding internal problem of noncommutative geometry, namely the computation of the index of a transversally elliptic operator on an arbitrary foliation. The new and crucial ingredient is a certain Hopf…

Differential Geometry · Mathematics 2009-10-31 Alain Connes , Henri Moscovici

In the local gluing one glues local neighborhoods around the critical point of the stable and unstable manifolds to gradient flow lines defined on a finite time interval $[-T,T]$ for large $T$. If the Riemannian metric around the critical…

Symplectic Geometry · Mathematics 2024-01-19 Urs Frauenfelder , Joa Weber

We define an analytical index map and a topological index map for conical pseudomanifolds. These constructions generalize the analogous constructions used by Atiyah and Singer in the proof of their topological index theorem for a smooth,…

Operator Algebras · Mathematics 2010-05-18 Claire Debord , Jean-Marie Lescure , Victor Nistor

Index theory has had profound impact on many branches of mathematics. In this note we discuss the context for a new kind of index theorem. We begin, however, with some operator theoretic results. In [11] Berger and Shaw established that…

Functional Analysis · Mathematics 2007-05-23 Ronald G. Douglas

Using a K-theory point of view, Bott related the Atiyah-Singer index theorem for elliptic operators on compact homogeneous spaces to the Weyl character formula. This article explains how to prove the local index theorem for compact…

Functional Analysis · Mathematics 2016-04-12 Seunghun Hong

For any Lie groupoid we construct an analytic index morphism taking values in a modified $K-theory$ group which involves the convolution algebra of compactly supported smooth functions over the groupoid. The construction is performed by…

K-Theory and Homology · Mathematics 2008-03-17 Paulo Carrillo Rouse

Starting from square-integrable wave functions on a Lie group, we build an invertible Fourier transform mapping them on wave functions on the dual of the Lie algebra. This is a group-theoretic version of the map from position space to…

Quantum Physics · Physics 2025-12-24 Mathieu Beauvillain , Blagoje Oblak , Marios Petropoulos

In this paper we describe a machinery for homological calculations of representations of FI_G, and use it to develop a local cohomology theory over any commutative Noetherian ring. As an application, we show that the depth introduced by the…

Representation Theory · Mathematics 2016-10-11 Liping Li , Eric Ramos

We analyse the noncommutative space underlying the quantum group SUq(2) from the spectral point of view which is the basis of noncommutative geometry, and show how the general theory developped in our joint work with H. Moscovici applies to…

Quantum Algebra · Mathematics 2007-05-23 Alain Connes

We prove that for generalised partitions of unity ${\phi_i \mid i \in I}$ and coverings $\mathfrak{U}:={\phi_i^{-1} (R \setminus {0}) \mid i \in I}$ of a topological space $X$ the cohomology of abstract $\mathfrak{U}$-local cochains…

Algebraic Topology · Mathematics 2011-10-18 Martin Fuchssteiner

Given a smooth embedding of manifolds $i: X \hookrightarrow M$ and a Fourier integral operator $\Phi$ acting on $M$, obtained by quantization of a canonical transformation, consider its trace $i^!(\Phi)$ on $X$ (in the sense of relative…

Analysis of PDEs · Mathematics 2016-12-20 P. A. Sipailo

In this article we address the first part of the programme presented in \cite{Teleman_arXiv_III}, \S 2; we construct the local $K$- theory level of the index formula. Our construction is sufficiently general to encompass the algebra of…

K-Theory and Homology · Mathematics 2013-08-29 Nicolae Teleman