Results 41 to 50 of about 14,642,230 (161)

Manifestly unitary higher Hilbert spaces

Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.
Abstract Higher idempotent completion gives a formal inductive construction of the n$n$‐category of finite‐dimensional n$n$‐vector spaces starting with the complex numbers. We propose a manifestly unitary construction of low‐dimensional higher Hilbert spaces, formally constructing the C∗$\mathrm{C}^*$‐3‐category of 3‐Hilbert spaces from Baez's 2 ...
Quan Chen, Giovanni Ferrer, Brett Hungar, David Penneys, Sean Sanford   +4 more
wiley   +1 more source

Analysis of Fundamental Algebraic Concepts and Information Security System

Noumerico
Cryptography plays a crucial role in protecting the data from unauthorized access. Nowadays, various cryptographic algorithms are used. It is not meant for information technology to secure the proposed work's primary target to achieve these tasks and ...
S M Nazmuz Sakib
doaj   +1 more source

Smarandache N-subalgebras(resp. filters) of CI-algebras

Annals of the West University of Timisoara: Mathematics and Computer Science, 2014
In this paper, we introduce the notions of N- subalgebras and N-filters based on Smarandache CI-algebra and give a number of their properties.
Rezaei Akbar, Saeid Arsham Borumand
doaj   +1 more source

On quasidiagonal $C^*$-algebras

Advanced Studies in Pure Mathematics, 2019
Latex, 45 ...
openaire   +3 more sources

Multipliers of C∗-algebras

Journal of Functional Analysis, 1973
AbstractFor a C∗-algebra A let M(A) denote the two-sided multipliers of A in its enveloping von Neumann algebra. A complete description of M(A) is given in the case where the spectrum of A is Hausdorff. The formula M(A ⊗α B) = M(A) ⊗α M(B) is discussed and examples are given where M(A)A is non-simple even though A is simple and separable.
Akemann, Charles A, Pedersen, Gert K, Tomiyama, Jun   +2 more
openaire   +1 more source

The Global Glimm Property for C*‐algebras of topological dimension zero

Bulletin of the London Mathematical Society, Volume 58, Issue 4, April 2026.
Abstract We show that a C∗$C^*$‐algebra with topological dimension zero has the Global Glimm Property (every hereditary subalgebra contains an almost full nilpotent element) if and only if it is nowhere scattered (no hereditary subalgebra admits a finite‐dimensional representation). This solves the Global Glimm Problem in this setting.
Ping Wong Ng, Hannes Thiel, Eduard Vilalta   +2 more
wiley   +1 more source

Semigroup C *-algebras

, 2016
to appear as a chapter in the Book "K-Theory for Group C*-Algebras and Semigroup C*-Algebras" jointly authored with Joachim Cuntz, Siegfried Echterhoff and Guoliang ...
openaire   +2 more sources

A note on the quasi‐local algebra of expander graphs

Bulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.
Abstract We show that the quasi‐local algebra of a coarse disjoint union of expander graphs does not contain a Cartan subalgebra isomorphic to ℓ∞$\ell _\infty$. Ozawa has recently shown that these algebras are distinct from the uniform Roe algebras of expander graphs, and our result describes a further difference.
Bruno M. Braga, Ján Špakula, Alessandro Vignati   +2 more
wiley   +1 more source

DMA:an algebra for multicriteria spatial modeling

, 2006
The objective of this paper is to propose a new algebra, called decision map algebra (DMA), especially devoted to multicriteria spatial modeling. DMA is a generic and context-independent modeling language inspired from map algebra and other similar ...
Chakhar, Salem, Mousseau, Vincent
core   +1 more source

Some metric characterizations of commutativity in C*-algebras [PDF]

Surveys in Mathematics and its Applications
We study Le Page's theorem in the context of C*-algebras and obtain several characterizations of commutativity and centrality implied by identities or inequalities satisfied by the norm.
Florin Pop
doaj