Results 21 to 30 of about 141,707 (269)

Commutation matrices and Commutation tensors [PDF]

open access: yesLinear and Multilinear Algebra, 2018
The commutation matrix was first introduced in statistics as a transposition matrix by Murnaghan in 1938. In this paper, we first investigate the commutation matrix which is employed to transform a matrix into its transpose. We then extend the concept of the commutation matrix to commutation tensor and use the commutation tensor to achieve the ...
Changqing Xu, Lingling He, Zerong Lin
openaire   +3 more sources

The Trap of Customization: Capitalism Goes Benevolent [PDF]

open access: yesCyberspace Studies
Big-tech corporations like Google, Meta, Microsoft etc. extensively utilize customization to collect and analyze user data, a practice integral to their business models.
Mostafa Ahmadzadeh
doaj   +1 more source

A practical approach to switching-loss reduction in a large-capacity static VAr compensator based on voltage-source inverters [PDF]

open access: yes, 2000
This paper presents a simple method for reduction of switching and snubbing losses in a large-capacity static VAr compensator (SVC) consisting of multiple three-phase voltage-source square-wave inverters.
Akagi, Hirofumi   +2 more
core   +1 more source

Commutator rings [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2006
A ring is called a commutator ring if every element is a sum of additive commutators. In this note we give examples of such rings. In particular, we show that given any ring R, a right R-module N, and a nonempty set Ω, EndR(⌖ΩN) and EndR(ΠΩN) are commutator rings if and only if either Ω is infinite or EndR(N) is itself a commutator ring.
openaire   +3 more sources

Commutant lifting for commuting row contractions [PDF]

open access: yesBulletin of the London Mathematical Society, 2010
one section and references were ...
Davidson, Kenneth R., Le, Trieu
openaire   +2 more sources

Line‐of‐sight probability for UAV communications in 3D grid urban streets

open access: yesElectronics Letters, 2023
In this letter, the authors present a novel expression for the probability of line‐of‐sight (LoS) between a UAV and ground users situated on a gridded street within urban and dense urban environments.
Mengan Song   +3 more
doaj   +1 more source

Relativistic free-particle quantization on the light-front: New aspects [PDF]

open access: yes, 2004
We use the light-front machinery to study the behavior of a relativistic free particle and obtain the quantum commutation relations from the classical Poisson brackets.
Sales, J. H. O.   +2 more
core   +3 more sources

Ways to improve the application of early release from serving a sentence [PDF]

open access: yesПенитенциарная наука, 2023
Introduction: the article discusses and analyzes ways to improve the complex institution of long-term release from serving a sentence as an important means to promote law-abiding behavior of convicts. A large number of petitions for the application of
Brilliantov A.V., Babayan S.L.
doaj   +1 more source

Counting Commutators [PDF]

open access: yesTransactions of the American Mathematical Society, 1974
Let G be a group generated by x and y, G 2 {G_2} be the commutator subgroup of G, and G 1 {G_1} be the group generated by y and G 2 {G_2} . This paper contains explicit expansions of
openaire   +2 more sources

ON THE COMMUTATION MATRIX

open access: yesBarekeng, 2023
The commutation matrix is a matrix that transforms any vec matrix , to vec transpose . In this article, three definitions of the commutation matrix are presented in different ways. It is shown that these three definitions are equivalent.
Yanita Yanita, Lyra Yulianti
doaj   +1 more source

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