Results 181 to 190 of about 530,501 (284)

Invariance and commutativity properties of some classes of solutions of the matrix differential equation X(t)X'(t) = X'(t)X(t)

, 1995
Jean-Claude Evard
openalex   +1 more source

On dihedral 2-groups as inner mapping groups of finite commutative inverse property loops [PDF]

, 2018
Markku Niemenmaa
openalex   +1 more source

Additive and multiplicative properties of Drazin inverse under new weakly commutativity condition

, 2023
Rounak Biswas, Falguni Roy
openalex   +2 more sources

Simple closed curves, non‐kernel homology and Magnus embedding

Journal of Topology, Volume 18, Issue 2, June 2025.
Abstract We consider the subspace of the homology of a covering space spanned by lifts of simple closed curves. Our main result is the existence of unbranched covers of surfaces where this is a proper subspace. More generally, for a fixed finite solvable quotient of the fundamental group we exhibit a cover whose homology is not generated by the lifts ...
Adam Klukowski
wiley   +1 more source

Conditioning in Tropical Probability Theory. [PDF]

Entropy (Basel), 2023
Matveev R, Portegies JW.
europepmc   +1 more source

Homological Lie brackets on moduli spaces and pushforward operations in twisted K‐theory

Journal of Topology, Volume 18, Issue 2, June 2025.
Abstract We develop a general theory of pushforward operations for principal G$G$‐bundles equipped with a certain type of orientation. In the case G=BU(1)$G={B\mathrm{U}(1)}$ and orientations in twisted K‐theory, we construct two pushforward operations, the projective Euler operation, whose existence was conjectured by Joyce, and the projective rank ...
Markus Upmeier
wiley   +1 more source

Commutative Quaternion Algebra with Quaternion Fourier Transform-Based Alpha-Rooting Color Image Enhancement

Computers
In this paper, we describe the associative and commutative algebra or the (2,2)-model of quaternions with application in color image enhancement. The method of alpha-rooting, which is based on the 2D quaternion discrete Fourier transform (QDFT) is ...
Artyom M. Grigoryan, Alexis A. Gomez
doaj   +1 more source

Arrow Contraction and Expansion in Tropical Diagrams. [PDF]

Entropy (Basel), 2023
Matveev R, Portegies JW.
europepmc   +1 more source

Banach embedding properties of non-commutative L^p-spaces

, 2000
Uffe Haagerup, Haskell P. Rosenthal, Fedor Sukochev   +2 more
openalex   +2 more sources

A new commutativity property of exceptional orthogonal polynomials

Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas
AbstractWe exhibit three examples showing that the “time-and-band limiting” commutative property found and exploited by D. Slepian, H. Landau and H. Pollak at Bell Labs in the 1960s, and independently by M. Mehta and later by C. Tracy and H. Widom in Random matrix theory, holds for exceptional orthogonal polynomials.
M. M. Castro, F. A. Grünbaum
openaire   +3 more sources