Results 41 to 50 of about 4,257,446 (215)

Degree estimate for commutators

open access: yesJournal of Algebra, 2009
18 ...
Drensky, V, Yu, JT
openaire   +4 more sources

New aspects in polygroup theory

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2020
The aim of this paper is to compute the commutativity degree in polygroup’s theory, more exactly for the polygroup PG and for extension of polygroups by polygroups, obtaining boundaries for them.
Sonea Andromeda Cristina
doaj   +1 more source

Permutation of elements in double semigroups [PDF]

open access: yes, 2015
Double semigroups have two associative operations $\circ, \bullet$ related by the interchange relation: $( a \bullet b ) \circ ( c \bullet d ) \equiv ( a \circ c ) \bullet ( b \circ d )$. Kock \cite{Kock2007} (2007) discovered a commutativity property in
Bremner, Murray, Madariaga, Sara
core   +1 more source

On the Quantumness of Multiparameter Estimation Problems for Qubit Systems

open access: yesEntropy, 2020
The estimation of more than one parameter in quantum mechanics is a fundamental problem with relevant practical applications. In fact, the ultimate limits in the achievable estimation precision are ultimately linked with the non-commutativity of ...
Sholeh Razavian   +2 more
doaj   +1 more source

Local commutativity versus Bell inequality violation for entangled states and versus non-violation for separable states [PDF]

open access: yes, 2007
By introducing a quantitative `degree of commutativity' in terms of the angle between spin-observables we present two tight quantitative trade-off relations: first, for entangled states, between the degree of commutativity of local observables and the ...
Seevinck, M, Uffink, J
core   +2 more sources

On commutative algebras of degree two [PDF]

open access: yesTransactions of the American Mathematical Society, 1962
Let 9 be a simple, commutative, power-associative algebra of degree 2 over an algebraically closed field a of characteristic not equal to 2, 3 or 5. The degree of 9 is defined to be the number of elements in the maximal set of pairwise orthogonal idempotents in W. This algebra has a unit element 1 [1, Theorem 3].
openaire   +2 more sources

Electric–magnetic dualities in non-abelian and non-commutative gauge theories

open access: yesNuclear Physics B, 2016
Electric–magnetic dualities are equivalence between strong and weak coupling constants. A standard example is the exchange of electric and magnetic fields in an abelian gauge theory.
Jun-Kai Ho, Chen-Te Ma
doaj   +1 more source

Commuting Regularity degree of finite semigroups [PDF]

open access: yesCreative Mathematics and Informatics, 2015
A pair (x, y) of elements x and y of a semigroup S is said to be a commuting regular pair, if there exists an element z ∈ S such that xy = (yx)z(yx). In a finite semigroup S, the probability that the pair (x, y) of elements of S is commuting regular will be denoted by dcr(S) and will be called the Commuting Regularity degree of S.
A. FIRUZKUHY, H. DOOSTIE
openaire   +1 more source

Higher Degree Davenport Constants over Finite Commutative Rings

open access: yes, 2021
We generalize the notion of Davenport constants to a `higher degree' and obtain various lower and upper bounds, which are sometimes exact as is the case for certain finite commutative rings of prime power cardinality. Two simple examples that capture the essence of these higher degree Davenport constants are the following.
Caro, Yair   +2 more
openaire   +4 more sources

On the Commutativity Degree of Finite Groups of Order via Degree Equation

open access: yesAfrican journal of mathematics and statistics studies
Commutativity degree is a numerical derivation that carries a lot of information about the structure of finite groups. It measures the extent to which two randomly selected non-identity elements of a group commute.
J. B. N., E. S., Hassan S. B., A. D.
semanticscholar   +1 more source

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