Results 31 to 40 of about 7,073 (96)

CONTROL OVER «BRUSH-COMMUTATOR» SPARKING IN DC MACHINES USING OPTOELECTRONIC SPARKING ANALYZER

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2005
A «brush-commutator» contact is one of the factor that affects commutative properties and commutation. The paper presents a new method for estimation of a commutation.
V. Zelinski
doaj  

n-complete crossed modules and wreath products of groups

Journal of New Results in Science, 2021
In this paper we examine the $n$-completeness of a crossed module and we show that if $X=(W_1,W_2,\partial)$ is an $n$-complete crossed module, where $W_i=A_i wr B_i$ is the wreath product of groups $A_i$ and $B_i$, then $A_i$ is at most $n$-complete ...
B. Davvaz, M.a. Dehghani
doaj  

Regularity for commutators of the local multilinear fractional maximal operators

Advances in Nonlinear Analysis, 2020
In this paper we introduce and study the commutators of the local multilinear fractional maximal operators and a vector-valued function b⃗ = (b1, …, bm). Under the condition that each bi belongs to the first order Sobolev spaces, the bounds for the above
Zhang Xiao, Liu Feng
doaj   +1 more source

Multiple Weighted Estimates for Vector-Valued Multilinear Singular Integrals with Non-Smooth Kernels and Its Commutators

Journal of Function Spaces and Applications, 2013
This note concerns multiple weighted inequalities for vector-valued multilinear singular integral operator with nonsmooth kernel and its corresponding commutators containing multilinear commutator and iterated commutator generated by the vector-valued ...
Dongxiang Chen, Dan Zou, Suzhen Mao
doaj   +1 more source

Commutators and Squares in Free Nilpotent Groups

International Journal of Mathematics and Mathematical Sciences, 2009
In a free group no nontrivial commutator is a square. And in the free group F2=F(x1,x2) freely generated by x1,x2 the commutator [x1,x2] is never the product of two squares in F2, although it is always the product of three squares.
Mehri Akhavan-Malayeri
doaj   +1 more source

The Commutator of Two Fuzzy Subsets

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
In this paper we introduce the idea of the commutator of two fuzzy subsets of a group and study the concept of the commutator of two fuzzy subsets of a group .We introduce and study some of its properties .
L. N. M. Tawfiq, R. H. Shihab
doaj  

Injetor multicanal com válvulas de estrangulamento para análise em fluxo Pinch valve injector for flow analysis

Química Nova, 2001
An important component for the automation of flow injection analysis (FIA) systems is the sample injection valve. A simple and inexpensive commutator with 16 pinch valves (8 normally open and 8 closed) was developed and configured as a multichannel ...
Fabiano S. Palgrossi, Jairo J. Pedrotti, Ivano G. R. Gutz   +2 more
doaj   +1 more source

On operator commutators [PDF]

, 1957
David C. Kleinecke
openalex   +2 more sources

Analysis of Heat Balance of the Commutator of Stretch Reducing Mill

Jixie chuandong, 2017
In order to solve the problem of gear and bearing high temperature burns of the bevel gear commutator of the stretch reducing mill,the heat balance of the bevel gear commutator is analyzed.
Zheng Gang, Zhao Zhengyang, Zhang Yubao
doaj  

A Kind of Non-commuting Graph of Finite Groups [PDF]

Journal of Sciences, Islamic Republic of Iran, 2014
Let g be a fixed element of a finite group G. We introduce the g-noncommuting graph of G whose vertex set is whole elements of the group G and two vertices x,y are adjacent whenever [x,y] g  and  [y,x] g. We denote this graph by .
B. Tolue, A. Erfanian, A. Jafarzadeh
doaj