Results 81 to 90 of about 1,268,119 (187)

Relative Maltsev Definability of some Commutator Properties

open access: yes, 2022
We show that, when restricted to the class of varieties that have a Taylor term, several commutator properties are definable by Maltsev conditions.Comment: 37 pages.
Kearnes, Keith A.
core  

Relative unitary commutator calculus, and applications [PDF]

open access: yes, 2020
. This note revisits localisation and patching method in the setting of generalised unitary groups. Introducing certain subgroups of relative elementary unitary groups, we develop relative versions of the conjugation calculus and the commutator calculus ...
Zuhong Zhang   +2 more
core  

On central commutator Galois extensions of rings [PDF]

open access: yes, 2000
Let B be a ring with 1, G a finite automorphism group of B of order n for some integer n, BG the set of elements in B fixed under each element in G, and Δ=VB(BG) the commutator subring of BG in B.
Lianyong Xue, George Szeto
core   +1 more source

Commutator estimates on contact manifolds and applications [PDF]

open access: yes, 2015
This article studies sharp norm estimates for the commutator of pseudo-differential operators with multiplication operators on closed Heisenberg manifolds.
Gimperlein, Heiko, Goffeng, Magnus
core   +1 more source

Energy dynamics modeling of commutator errors

open access: yes, 2003
For efficient large-eddy simulation of complex flow situations the use of non-uniform filter-widths is considered advantageous. It is, however, known that a non-uniform filter-width introduces additional SGS-terms, generally referred to as commutator ...
Geurts, Bernardus J., van der Bos, F.
core   +1 more source

Commutator End Cover Blueprint

open access: yes, 2021
Special commutator end cover for P3 motor by Mather and Platt Ltd Manchester, full size.
Mather and Platt
core  

Magnitude control of commutator errors [PDF]

open access: yes, 2006
Non-uniform filtering of the Navier-Stokes equations expresses itself, next to the turbulent stresses, in additional closure terms known as commutator errors.
Geurts, B.J. (author)   +1 more
core   +1 more source

Constraints to a justification of commutativity of multiplication

open access: yes, 2017
In this paper we investigate a pre-service teacher's whole-class discussion at Grade 6, where she attempts to justify the general claim that multiplication is commutative in ℕ. Our analysis points at two conditions that constrain the discussion in class: The first is that the diagram used to represent a multiplicative situation-and the way the diagram ...
Strømskag, Heidi, Valenta, Anita
openaire   +2 more sources

Non-commutative optimization problems with differential constraints

open access: yesQuantum
Non-commutative polynomial optimization (NPO) problems seek to minimize the state average of a polynomial of some operator variables, subject to polynomial constraints, over all states and operators, as well as the Hilbert spaces where those might be defined.
Araújo, Mateus   +2 more
openaire   +2 more sources

The sigma commutator from lattice QCD

open access: yes, 2001
As a direct source of information on chiral symmetry breaking within QCD, the sigma commutator is of considerable importance. Since hadron structure is a non-perturbative problem, numerical calculations on a space-time lattice are currently the only ...
Stewart V. Wright   +5 more
core   +1 more source

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