Results 1 to 10 of about 17,436 (130)

Spectral Distances: Results for Moyal Plane and Noncommutative Torus [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2010
The spectral distance for noncommutative Moyal planes is considered in the framework of a non compact spectral triple recently proposed as a possible noncommutative analog of non compact Riemannian spin manifold.
Eric Cagnache, Jean-Christophe Wallet
doaj   +10 more sources

Noncommutative topology and the world's simplest index theorem. [PDF]

open access: yesProc Natl Acad Sci U S A, 2010
In this article we outline an approach to index theory on the basis of methods of noncommutative topology. We start with an explicit index theorem for second-order differential operators on 3-manifolds that are Fredholm but not elliptic. This low-brow index formula is expressed in terms of winding numbers. We then proceed to show how it is derived as a
van Erp E.
europepmc   +5 more sources

From factorizations of noncommutative polynomials to combinatorial topology [PDF]

open access: yesOpen Mathematics, 2010
Abstract This is an extended version of a talk given by the author at the conference “Algebra and Topology in Interaction” on the occasion of the 70th Anniversary of D.B. Fuchs at UC Davis in September 2009. It is a brief survey of an area originated around 1995 by I. Gelfand and the speaker.
Retakh Vladimir
doaj   +4 more sources

Noncommutative localization in topology [PDF]

open access: yes, 2002
A survey of the applications of the noncommutative Cohn localization of rings to the topology of manifolds with infinite fundamental group, with particular emphasis on the algebraic K- and L-theory of generalized free products.Comment: 20 pages, LATEX ...
Ranicki, Andrew
core   +9 more sources

Noncommutative topology and Jordan operator algebras [PDF]

open access: yesMathematische Nachrichten, 2018
Jordan operator algebras are norm-closed spaces of operators on a Hilbert space with $a^2 \in A$ for all $a \in A$. We study noncommutative topology, noncommutative peak sets and peak interpolation, and hereditary subalgebras of Jordan operator algebras.
Blecher, David P., Neal, Matthew
core   +2 more sources

From Topology to Noncommutative Geometry: $K$-theory

open access: yes, 2014
We associate to each unital $C^*$-algebra $A$ a geometric object---a diagram of topological spaces representing quotient spaces of the noncommutative space underlying $A$---meant to serve the role of a generalized Gel'fand spectrum.
de Silva, Nadish
core   +3 more sources

Noncommutative tensor triangulated categories and coherent frames

open access: yesComptes Rendus. Mathématique, 2023
We develop a point-free approach for constructing the Nakano–Vashaw–Yakimov–Balmer spectrum of a noncommutative tensor triangulated category under certain assumptions.
Mallick, Vivek Mohan, Ray, Samarpita
doaj   +1 more source

Experimental characterization of three-band braid relations in non-Hermitian acoustic lattices

open access: yesPhysical Review Research, 2023
The nature of complex eigenenergy enables unique band topology in non-Hermitian (NH) lattices. Recently, there has been fast growing interest in the elusive winding and braiding topologies of the NH single and double bands, respectively. Here, we explore
Qicheng Zhang   +6 more
doaj   +1 more source

Structure Sheaves and Noncommutative Topologies [PDF]

open access: yesJournal of Algebra, 1997
The main purpose of this paper is to construct structure sheaves over noncommutative topologies associated to an arbitrary left noetherian ring. In the first section the authors quickly recollect some of the main notions, constructions and results, which will be needed throughout.
Garcia, M.   +2 more
openaire   +2 more sources

Noncommutative topological half-flat gravity [PDF]

open access: yesGeneral Relativity and Gravitation, 2005
12+1 pages, revtex4, no ...
García-Compeán, H.   +2 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy