Results 271 to 280 of about 23,272 (312)

FUZZIFYING CLOSURE SYSTEMS AND CLOSURE OPERATORS

2011
In this paper, we propose the concepts of fuzzifying closure systems and Birkhoff fuzzifying closure operators. In the framework of fuzzifying mathematics, we find that there still exists a one to one correspondence between fuzzifying closure systems and Birkhoff fuzzifying closure operators as in the case of classical mathematics.
Luo, Xiaoli, Fang, Jinming
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Regular Closure Operators

1995
Regular closure operators provide the key instrument for attacking the epimorphism problem in a subcategory A of the given (and, in general, better behaved) category χ. Depending on A one defines the A-regular closure operator of χ in such a way that its dense morphisms in A are exactly the epimorphisms of A.
D. Dikranjan, W. Tholen
openaire   +1 more source

A CLOSURE OPERATION IN RINGS

International Journal of Mathematics, 2001
We study the operation E → cl (E) defined on subsets E of a unital ring R, where x ∈ cl (E) if (x + Rb) ∩ E ≠ ∅ for each b in R such that Rx + Rb = R. This operation, which strongly resembles a closure, originates in algebraic K-theory. For any left ideal L we show that cl (L) equals the intersection of the maximal left ideals of R containing L ...
Ara, P., Pedersen, Gert Kjærgård, Perera, F.   +2 more
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Operative Nuances of Myelomeningocele Closure

Neurosurgery, 2002
ALTHOUGH ADVANCES IN prenatal care and diagnosis have reduced the incidence of spina bifida, repair of neural tube defects remains one of the standard cases encountered by pediatric neurosurgeons. The operative techniques used in closure of these congenital defects have remained essentially unchanged during the past 2 decades; however, the operative ...
Victor L, Perry, A Leland, Albright, P David, Adelson   +2 more
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U-Closure Operators and Compactness

Applied Categorical Structures, 2005
In this paper the authors introduce a notion of compactness in the following way: Let \({\mathcal A}\) be a category, \(\chi \) a finitely complete category with a proper \((\varepsilon ,{\mathcal M})\)-factorization structure for morphisms and \(U:{\mathcal A}\rightarrow \chi \) a functor. A pair \((A,m)\) with \(A\) object of \({\mathcal A}\) and \(m:
Castellini, G., Giuli, E.
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Closure Operators in Convergence Spaces

Acta Mathematica Hungarica, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Regular Closure Operators

2003
In an 〈E,M〉-categoryX for sinks, we identify necessary conditions for Galois connections from the power collection of the class of (composable pairs) of morphisms inM to factor through the “lattice” of all closure operators onM, and to factor through certain sublattices. This leads to the notion ofregular closure operator.
openaire   +1 more source

Closure operators II

1989
Weak factorization systems are developped with the aim the prepare the basis for a general definition of a closure operator.
DIKRANJAN, Dikran, Giuli E., Tholen W.
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Mackey Closure Operators

Journal of the London Mathematical Society, 1971
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⋆-closure Operators on Čech Closure Space

Journal of Computer and Mathematical Sciences, 2018
Muhsina V, Baby Chacko
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