Results 11 to 20 of about 759,634 (294)

P*-closure operator and p*-regularity in fuzzy setting [PDF]

open access: yesMathematica Moravica, 2015
In this paper a new type of fuzzy regularity, viz. fuzzy p*- regularity has been introduced and studied by a newly defined closure operator, viz., fuzzy p*-closure operator.
Bhattacharyya Anjana
doaj   +2 more sources

The induced generalized OWA operator (WP) [PDF]

open access: yes, 2013
[spa] Se presenta el operador OWA generalizado inducido (IGOWA). Es un nuevo operador de agregación que generaliza al operador OWA a través de utilizar las principales características de dos operadores muy conocidos como son el operador OWA generalizado ...
Merigó Lindahl, José M.   +1 more
core   +7 more sources

Algebraic reflexivity of isometry groups and automorphism groups of some operator structures [PDF]

open access: yes, 2013
We establish the algebraic re exivity of three isometry groups of operator structures: The group of all surjective isometries on the unitary group, the group of all surjective isometries on the set of all positive invertible operators equipped with ...
Botelho, Fernanda   +2 more
core   +2 more sources

Closure operators on algebras [PDF]

open access: yesInternational Journal of Algebra and Computation, 2015
We study connections between closure operators on an algebra (A, Ω) and congruences on the extended power algebra defined on the same algebra. We use these connections to give an alternative description of the lattice of all subvarieties of semilattice ordered algebras.
Agata Pilitowska, Anna Zamojska-Dzienio
openaire   +3 more sources

Novel Characterizations of $LM$-Fuzzy Open Operators [PDF]

open access: yesTransactions on Fuzzy Sets and Systems, 2022
In this paper, we present some characterizations of the $LM$-fuzzy interior operator, the $LM$-fuzzy closure operator, $LM$-fuzzy semiopen operator and $LM$-fuzzy preopen operator in an $LM$-fuzzy topological space.
Fu-Gui Shi
doaj   +1 more source

Connectivity with respect to α-discrete closure operators

open access: yesOpen Mathematics, 2022
We discuss certain closure operators that generalize the Alexandroff topologies. Such a closure operator is defined for every ordinal α>0\alpha \gt 0 in such a way that the closure of a set AA is given by closures of certain α\alpha -indexed sequences ...
Šlapal Josef
doaj   +1 more source

Lattice Structure of Some Closed Classes for Three-Valued Logic and Its Applications

open access: yesMathematics, 2021
This paper provides a brief overview of modern applications of nonbinary logic models, where the design of heterogeneous computing systems with small computing units based on three-valued logic produces a mathematically better and more effective solution
Elmira Yu. Kalimulina
doaj   +1 more source

On a Topological Operator via Local Closure Function [PDF]

open access: yes, 2023
In this research, we define and study the new topological operator called ?-boundary operator Bd? by merging local closure function in ideal topological spaces.
Tunç, Ayşe Nur   +1 more
core   +1 more source

Some Unitary Operators on Hoop-algebras

open access: yesFuzzy Information and Engineering, 2017
In this paper, we introduce the notions of multiplier, ⊙-closure operator and modal operator on hoop-algebras. After that, we investigate some algebraic properties of multiplier, ⊙-closure operator and modal operator on hoop-algebras.
R. Tayebi Khorami, A. Borumand Saeid
doaj   +1 more source

A Theory of Closure Operators [PDF]

open access: yes, 2008
We explore how fixed-point operators can be designed to interact and be composed to form autonomic control mechanisms. We depart from the idea that an operator is idempotent only for the states that it assures, and define a more general concept in which acceptable states are a superset of assurable states.
Alva L. Couch, Marc Chiarini
openaire   +2 more sources

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