Results 271 to 280 of about 787,356 (301)

Operations on Closure Operators

1995
Despite the powerful continuity condition, the notion of closure operator is very general. It is therefore important to provide tools for improving a given operator. Fortunately, there is a natural lattice structure for closure operators that allows us to distinguish between properties stable under meet (idempotency, hereditariness, productivity), and ...
D. Dikranjan, W. Tholen
openaire   +1 more source

Connectedness with Respect to a Closure Operator

Applied Categorical Structures, 2001
For categories \(\mathcal C\) that are supplied with a factorization structure \(({\mathcal E}, M)\) for sinks, a closure operator \(C\) and a subclass \(N\) of \(M\), the author introduces a concept of connected objects. He demonstrates that under suitable additional conditions on \(\mathcal C\) many classical results about topological connectedness ...
openaire   +3 more sources

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
openaire   +1 more source

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
openaire   +2 more sources

Universal closure operator for prolog

ACM SIGPLAN Notices, 1986
A powerful, second-order universal closure operator is proposed and its usefulness in constructing clear, efficient programs is demonstrated.
openaire   +2 more sources

Divisibility Closure Operations

Journal of the London Mathematical Society, 1954
openaire   +1 more source

Mackey Closure Operators

Journal of the London Mathematical Society, 1971
openaire   +1 more source

Insertion operations: Closure properties

Bull. EATCS, 1993
The paper investigates closure properties of families of languages (in Chomsky hierarchy) under various variants of insertion operations as introduced by the author [On insertion and deletion operations in formal languages, PhD Thesis, Univ. of Turku, Dept. of Math., 1991].
openaire   +2 more sources

Closure operators with positive connectives and quantifiers

Moscow University Computational Mathematics and Cybernetics, 2017
S S Marchenkov
exaly  

Constructing uninorms via closure operators on a bounded lattice

Fuzzy Sets and Systems, 2020
Hua-Peng Zhang, Yao Ouyang
exaly