Results 31 to 40 of about 64,055 (183)

Pure ⁎-homomorphisms

open access: yesJournal of Functional Analysis
We introduce and study a notion of pureness for *-homomorphisms and, more generally, for cpc. order-zero maps. After providing several examples of pureness, such as "$\mathcal{Z}$-stable"-like maps, we focus on the question of when pure maps factor through a pure C*-algebra.
Joan Bosa, Eduard Vilalta
openaire   +5 more sources

The Homomorphism Theorems of M-Hazy Rings and Their Induced Fuzzifying Convexities

open access: yesMathematics, 2020
In traditional ring theory, homomorphisms play a vital role in studying the relation between two algebraic structures. Homomorphism is essential for group theory and ring theory, just as continuous functions are important for topology and rigid movements
Faisal Mehmood   +3 more
doaj   +1 more source

Homomorphisms between Fuzzy Approximation Spaces Based on Residuated Lattice

open access: yesJournal of Applied Mathematics, 2014
Two kinds of homomorphisms of fuzzy approximation spaces based on complete residuated lattice are proposed. The homomorphisms are structure-preserving maps in some sense.
Yuan Zhao
doaj   +1 more source

Semitopological Homomorphisms

open access: yesRendiconti del Seminario Matematico della Università di Padova, 2008
Inspired by an analogous result of Arnautov about isomorphisms, we prove that all continuous surjective homomorphisms of topological groups f :G → H can be obtained as restrictions of open continuous surjective homomorphisms
openaire   +4 more sources

Various Kinds of Freeness in the Categories of Krasner Hypermodules

open access: yesInternational Journal of Analysis and Applications, 2018
The purpose of this paper is to study the concept of freeness in the categories of Krasner hypermodules over a Krasner hyperring. In this regards first we construct various kinds of categories of hypermodules based on various kinds of homomorphisms of ...
Hossein Shojaei, Reza Ameri
doaj   +2 more sources

Two mod-p Johnson filtrations [PDF]

open access: yes, 2014
We consider two mod-p central series of the free group given by Stallings and Zassenhaus. Applying these series to definitions of Dennis Johnson's filtration of the mapping class group we obtain two mod-p Johnson filtrations.
Cooper, James
core  

On Oriented Colourings of Graphs on Surfaces

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT For an oriented graph G $G$, the least number of colours required to oriented colour G $G$ is called the oriented chromatic number of G $G$ and denoted χ o ( G ) ${\chi }_{o}(G)$. For a non‐negative integer g $g$ let χ o ( g ) ${\chi }_{o}(g)$ be the least integer such that χ o ( G ) ≤ χ o ( g ) ${\chi }_{o}(G)\le \unicode{x0200A}{\chi }_{o}(g)
Alexander Clow
wiley   +1 more source

Signed Projective Cubes, a Homomorphism Point of View

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT The (signed) projective cubes, as a special class of graphs closely related to the hypercubes, are on the crossroad of geometry, algebra, discrete mathematics and linear algebra. Defined as Cayley graphs on binary groups, they represent basic linear dependencies.
Meirun Chen   +2 more
wiley   +1 more source

The structure of homomorphisms from Banach algebras of differentiable functions into finite dimensional Banach algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
We show that the structure of continuous and discontinuous homomorphisms from the Banach algebra Cn[0,1] of n times continuously differentiable functions on the unit interval [0,1] into finite dimensional Banach algebras is completely determined by ...
Viet Ngo
doaj   +1 more source

Weak Homomorphisms of Coalgebras Beyond Set

open access: yesDemonstratio Mathematica, 2014
We study the notion of weak homomorphisms between coalgebras of different types generalizing thereby that of homomorphisms for similarly typed coalgebras. This helps extend some results known so far in the theory of Universal coalgebra over Set.
Kianpi Maurice
doaj   +1 more source

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