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http://arxiv.org/pdf/1901.0743...
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https://doi.org/10.1007/978-3-...
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https://dx.doi.org/10.48550/ar...
Article . 2019
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Curvature in noncommutative geometry

Authors: Fathizadeh, Farzad; Khalkhali, Masoud;

Curvature in noncommutative geometry

Abstract

Our understanding of the notion of curvature in a noncommutative setting has progressed substantially in the past ten years. This new episode in noncommutative geometry started when a Gauss-Bonnet theorem was proved by Connes and Tretkoff for a curved noncommutative two torus. Ideas from spectral geometry and heat kernel asymptotic expansions suggest a general way of defining local curvature invariants for noncommutative Riemannian type spaces where the metric structure is encoded by a Dirac type operator. To carry explicit computations however one needs quite intriguing new ideas. We give an account of the most recent developments on the notion of curvature in noncommutative geometry in this paper.

76 pages, 8 figures, final version, one section on open problems added, and references expanded. Appears in "Advances in Noncommutative Geometry - on the occasion of Alain Connes' 70th birthday"

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Keywords

Mathematics - Differential Geometry, Mathematics - Operator Algebras, FOS: Physical sciences, Mathematical Physics (math-ph), Mathematics - Spectral Theory, Differential Geometry (math.DG), Mathematics - Quantum Algebra, FOS: Mathematics, Quantum Algebra (math.QA), Operator Algebras (math.OA), Spectral Theory (math.SP), Mathematical Physics

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Average
Average
Average
Green