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Index Theory for Locally Compact Noncommutative Geometries

A. L. Carey Mathematical Sciences Institute, Australian National University, Canberra, Australia
V. Gayral Université de Reims, Reims, France
A. Rennie University of Wollongong, Wollongong, Australia
F. A. Sukochev University of New South Wales, Kensington, Australia
Available Formats:
Electronic ISBN: 978-1-4704-1721-5
Product Code: MEMO/231/1085.E
List Price: $76.00 MAA Member Price:$68.40
AMS Member Price: $45.60 Click above image for expanded view Index Theory for Locally Compact Noncommutative Geometries A. L. Carey Mathematical Sciences Institute, Australian National University, Canberra, Australia V. Gayral Université de Reims, Reims, France A. Rennie University of Wollongong, Wollongong, Australia F. A. Sukochev University of New South Wales, Kensington, Australia Available Formats:  Electronic ISBN: 978-1-4704-1721-5 Product Code: MEMO/231/1085.E  List Price:$76.00 MAA Member Price: $68.40 AMS Member Price:$45.60
• Book Details

Memoirs of the American Mathematical Society
Volume: 2312014; 130 pp
MSC: Primary 46; 19; 58;

Spectral triples for nonunital algebras model locally compact spaces in noncommutative geometry. In the present text, the authors prove the local index formula for spectral triples over nonunital algebras, without the assumption of local units in our algebra. This formula has been successfully used to calculate index pairings in numerous noncommutative examples. The absence of any other effective method of investigating index problems in geometries that are genuinely noncommutative, particularly in the nonunital situation, was a primary motivation for this study and the authors illustrate this point with two examples in the text.

In order to understand what is new in their approach in the commutative setting the authors prove an analogue of the Gromov-Lawson relative index formula (for Dirac type operators) for even dimensional manifolds with bounded geometry, without invoking compact supports. For odd dimensional manifolds their index formula appears to be completely new.

• Chapters
• Introduction
• 1. Pseudodifferential Calculus and Summability
• 2. Index Pairings for Semifinite Spectral Triples
• 3. The Local Index Formula for Semifinite Spectral Triples
• 4. Applications to Index Theorems on Open Manifolds
• 5. Noncommutative Examples
• A. Estimates and Technical Lemmas
• Requests

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Volume: 2312014; 130 pp
MSC: Primary 46; 19; 58;

Spectral triples for nonunital algebras model locally compact spaces in noncommutative geometry. In the present text, the authors prove the local index formula for spectral triples over nonunital algebras, without the assumption of local units in our algebra. This formula has been successfully used to calculate index pairings in numerous noncommutative examples. The absence of any other effective method of investigating index problems in geometries that are genuinely noncommutative, particularly in the nonunital situation, was a primary motivation for this study and the authors illustrate this point with two examples in the text.

In order to understand what is new in their approach in the commutative setting the authors prove an analogue of the Gromov-Lawson relative index formula (for Dirac type operators) for even dimensional manifolds with bounded geometry, without invoking compact supports. For odd dimensional manifolds their index formula appears to be completely new.

• Chapters
• Introduction
• 1. Pseudodifferential Calculus and Summability
• 2. Index Pairings for Semifinite Spectral Triples
• 3. The Local Index Formula for Semifinite Spectral Triples
• 4. Applications to Index Theorems on Open Manifolds
• 5. Noncommutative Examples
• A. Estimates and Technical Lemmas
Review Copy – for reviewers who would like to review an AMS book
Permission – for use of book, eBook, or Journal content
Accessibility – to request an alternate format of an AMS title
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