Results 81 to 90 of about 1,976 (187)

A pointfree version of remainder preservation [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2013
Recall that a continuous function $fcolon Xto Y$ between Tychonoff spaces is proper if and only if the Stone extension $f^{beta}colon beta Xtobeta Y$ takes remainder to remainder, in the sense that $f^{beta}[beta X-X]subseteq beta Y-Y$.
Themba Dube, Inderasan Naidoo
doaj  

Homomorphisms of separoids

open access: yesElectronic Notes in Discrete Mathematics, 2007
Abstract The notion of separoid homomorphisms was introduced in [Nesetřil, J., and R. Strausz, Universality of separoids, Arch. Math. (Brno) 42 (2006), 85–101], by Jarik Nesetřil and the author, where it was proved that separoids endowed with such maps constitute a dense and universal category.
openaire   +1 more source

The homomorphism domination exponent

open access: yesEuropean Journal of Combinatorics, 2011
23 ...
Swastik Kopparty, Benjamin Rossman
openaire   +2 more sources

THE PROBLEM OF NEW PROPERTIES OF NUMBERS

open access: yesНадежность и качество сложных систем
Background. The proposed work is devoted to research to clarify the axiomatization of arithmetic in connection with the presence of special assumptions in it.
L.G. Sushkov
doaj   +1 more source

Stability of ψ-additive mappings: applications to nonlinear analysis

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
The Hyers-Ulam stability of mappings is in development and several authors have remarked interesting applications of this theory to various mathematical problems.
George Isac, Themistocles M. Rassias
doaj   +1 more source

Undecidability of polynomial inequalities in weighted graph homomorphism densities

open access: yesForum of Mathematics, Sigma
Many problems and conjectures in extremal combinatorics concern polynomial inequalities between homomorphism densities of graphs where we allow edges to have real weights.
Grigoriy Blekherman   +2 more
doaj   +1 more source

HOMOMORPHISM IN ROUGH LATTICE

open access: yesJournal of New Theory, 2015
− In this paper, we introduce the concept of set-valued homomorphism of a lattice which isthe generalization of ordinary lattice homomorphism. We construct generalized rough lower and upperapproximations operators, by means of a set-valued mapping, which
Dipankar Rana, Sankar Kumar Roy
doaj  

Free Algebras of Full Terms Generated by Order-Preserving Transformations

open access: yesMathematics
Full terms, which serve as tools for classifying algebras into subclasses, can be studied using an algebraic approach. For a natural number n, this paper introduces the algebra of order-preserving full terms under the (n+1)-superposition operation ...
Khwancheewa Wattanatripop   +1 more
doaj   +1 more source

Fredholm Theory Relative to Any Algebra Homomorphisms

open access: yesMathematics
In this paper, we give another definition of Ruston elements and almost Ruston elements, which is equivalent to the definitions given by Mouton and Raubenheimer in the case that the homomorphism has a closed range and Riesz property.
Yingying Kong, Yabo Wang, Jingen Yang
doaj   +1 more source

BCI-homomorphisms [PDF]

open access: yesFormalized Mathematics, 2008
Yuzhong Ding, Fuguo Ge, Chenglong Wu
openaire   +1 more source

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