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We initiate a unified, axiomatic study of noncommutative algebras R whose prime spectra are, in a natural way, finite unions of commutative noetherian spectra. Our results illustrate how these commutative spectra can be functorially ``sewn…

Rings and Algebras · Mathematics 2007-05-23 Edward S. Letzter

We introduce a notion of the noncommutative integrability within a framework of contact geometry.

Symplectic Geometry · Mathematics 2012-12-13 Bozidar Jovanovic

The moduli spaces of theta-semistable representations of a finite quiver can be packaged together to form a noncommutative compact manifold.

Algebraic Geometry · Mathematics 2016-09-07 Lieven Le Bruyn

We review the noncommutative spectral geometry, a gravitational model that combines noncommutative geometry with the spectral action principle, in an attempt to unify General Relativity and the Standard Model of electroweak and strong…

High Energy Physics - Theory · Physics 2014-03-25 Mairi Sakellariadou

In this paper, we will construct the graph free product of noncommutative probability space. This is the attempt to explain and observe the combinatorial-object-depending probabilistic structure.

Operator Algebras · Mathematics 2007-05-23 Ilwoo Cho

For nonautonomous linear difference equations, we introduce the notion of the so-called nonuniform dichotomy spectrum and prove a spectral theorem. Moreover, we introduce the notion of weak kinematical similarity and prove a reducibility…

Dynamical Systems · Mathematics 2014-02-10 Jifeng Chu , Hailong Zhu , Stefan Siegmund , Yonghui Xia

We provide a generalization of the construction of a spectrum of a commutative ring as a locally ringed space, applicable to cone injectivity classes in general contexts, especially in locally finitely presentable categories. In its full…

Category Theory · Mathematics 2023-12-05 Jan Jurka , Tomáš Perutka , Lukáš Vokřínek

A definition of relative discrete spectrum of noncommutative W*-dynamical systems is given in terms of the basic construction of von Neumann algebras, motivated from three perspectives: Firstly, as a complementary concept to relative weak…

Operator Algebras · Mathematics 2021-08-31 Rocco Duvenhage , Malcolm King

A permutation class is splittable if it is contained in the merge of two of its proper subclasses. We characterise the unsplittable subclasses of the class of separable permutations both structurally and in terms of their bases.

Combinatorics · Mathematics 2016-05-06 Michael Albert , Vít Jelínek

In this paper we classify invariant noncommutative connections in the framework of the algebra of endomorphisms of a complex vector bundle. It has been proven previously that this noncommutative algebra generalizes in a natural way the…

Mathematical Physics · Physics 2009-11-10 Thierry Masson , Emmanuel Serie

We discuss the noncommutative generalizations of polynomial algebras which after appropriate completions can be used as coordinate algebras in various noncommutative settings, (noncommutative differential geometry, noncommutative algebraic…

Quantum Algebra · Mathematics 2010-03-19 Michel Dubois-Violette

The goal of these lectures is to present the few fundamentals of noncommutative geometry looking around its spectral approach. Strongly motivated by physics, in particular by relativity and quantum mechanics, Chamseddine and Connes have…

Mathematical Physics · Physics 2017-12-19 Bruno Iochum

We discuss non commutative functions, which naturally arise when dealing with functions of more than one matrix variable.

Functional Analysis · Mathematics 2017-08-22 Jim Agler , John E. McCarthy

A summary of noncommutative spectral geometry as an approach to unification is presented. The role of the doubling of the algebra, the seeds of quantization and some cosmological implications are briefly discussed.

High Energy Physics - Theory · Physics 2012-03-12 Mairi Sakellariadou

We consider a class of C*-algebras C(X) associated with quantum spaces such as spheres, projective spaces, and lens spaces. We introduce a non-self-adjoint operator algebra A together with an explicit functor from the category of…

Operator Algebras · Mathematics 2026-05-18 Arnaud Brothier

A certain special function of the generalized hypergeometric variety is shown to fulfill a host of useful noncommutative identities.

Quantum Algebra · Mathematics 2015-06-26 A. Yu. Volkov

Two numbers are spectral equivalent if they have the same length spectrum. We show how to compute the equivalence classes of this relation. Moreover, we show that these classes can only have either 1,2 or infinitely many elements.

Number Theory · Mathematics 2007-05-23 Wai Yan Pong

The concept of spectrum for a class of non-linear wave equations is studied. Instead of looking for stability, the key to the spectral structure is found in the instability phenomena (bifurcations). This aspect is best seen in the…

Quantum Physics · Physics 2016-11-14 P. Grochowski , W. Kaniowski , B. Mielnik

We study the topology of a class of proper submodules and some of its distinguished subclasses and call them structure spaces. We give several criteria for the quasi-compactness of these structure spaces. We study $T_0$ and $T_1$ separation…

Rings and Algebras · Mathematics 2023-04-18 Amartya Goswami

We study irreducible representations of a class of quantum spheres, quotients of quantum symplectic spheres.

Quantum Algebra · Mathematics 2022-05-20 Francesco D'Andrea , Giovanni Landi