Results 31 to 40 of about 65,756 (223)

Non-Commutative Gauge Theories and the Cosmological Constant [PDF]

open access: yes, 2001
We discuss the issue of the cosmological constant in non-commutative non-supersymmetric gauge theories. In particular, in orbifold field theories non-commutativity acts as a UV cut-off. We suggest that in these theories quantum corrections give rise to a
A. Armoni   +35 more
core   +3 more sources

Multiple commutator formulas [PDF]

open access: yesIsrael Journal of Mathematics, 2012
Let A be a quasi-finite R-algebra (i.e., a direct limit of module finite algebras) with identity. Let I_i, i=0,...,m, be two-sided ideals of A, \GL_n(A,I_i) the principal congruence subgroup of level I_i in GL_n(A) and E_n(A,I_i) be the relative elementary subgroup of level I_i.
Hazrat, Roozbeh (R16959), Zhang, Zuhong
openaire   +4 more sources

On relationships between two linear subspaces and two orthogonal projectors

open access: yesSpecial Matrices, 2019
Sum and intersection of linear subspaces in a vector space over a field are fundamental operations in linear algebra. The purpose of this survey paper is to give a comprehensive approach to the sums and intersections of two linear subspaces and their ...
Tian Yongge
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

Children Have the Capacity to Think Multiplicatively, as long as … [PDF]

open access: yesEuropean Journal of STEM Education, 2017
Multiplicative thinking has been widely accepted as a critically important ‘big idea’ of mathematics and one which underpins much mathematical understanding beyond the primary years of schooling.
Chris Hurst
doaj   +1 more source

On generalized homoderivations of prime rings

open access: yesМатематичні Студії, 2023
Let $\mathscr{A}$ be a ring with its center $\mathscr{Z}(\mathscr{A}).$ An additive mapping $\xi\colon \mathscr{A}\to \mathscr{A}$ is called a homoderivation on $\mathscr{A}$ if $\forall\ a,b\in \mathscr{A}\colon\quad \xi(ab)=\xi(a)\xi(b)+\xi(a)b+a\xi(
N. Rehman   +2 more
doaj   +1 more source

Homotopical approach to quantum contextuality [PDF]

open access: yesQuantum, 2020
We consider the phenomenon of quantum mechanical contextuality, and specifically parity-based proofs thereof. Mermin’s square and star are representative examples.
Cihan Okay, Robert Raussendorf
doaj   +1 more source

Necessary and sufficient conditions for local creation of quantum correlation

open access: yes, 2012
Quantum correlation can be created by a local operation from some initially classical states. We prove that the necessary and sufficient condition for a local trace-preserving channel to create quantum correlation is that it is not a commutativity ...
Fan, Heng   +3 more
core   +1 more source

Commutative queries

open access: yesProceedings of the Fifth Israeli Symposium on Theory of Computing and Systems, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Beigel, Richard, Chang, Richard
openaire   +1 more source

On (?,?)-Derivations and Commutativity of Prime and Semi prime ?-rings

open access: yesمجلة بغداد للعلوم, 2016
Let R be a ?-ring, and ?, ? be two automorphisms of R. An additive mapping d from a ?-ring R into itself is called a (?,?)-derivation on R if d(a?b) = d(a)? ?(b) + ?(a)?d(b), holds for all a,b ?R and ???. d is called strong commutativity preserving (SCP)
Baghdad Science Journal
doaj   +1 more source

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