Results 21 to 30 of about 606,802 (315)
On reflexive closed set lattices [PDF]
, 2010 summary:For a topological space $X$, let $S(X)$ denote the set of all closed subsets in $X$, and let $C(X)$ denote the set of all continuous maps $f:X\to X$.
Zhao, Dongsheng, Yang, Zhongqiang
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On g*s-Closed Functions in Topological Spaces [PDF]
Engineering and Technology Journal, 2014 Pushpalatha and K. Anitha [1] introduce a new concept of functions which is g*s-closed function in topological spaces. In this paper, we modify this concept and study the properties of some types of these functions.
Salim dawood Mohisn
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On a class of sets betweenμ-closed sets andμg-closed sets [PDF]
Journal of Taibah University for Science, 2017 In this paper, a new class of sets called μ*g-closed sets are introduced and investigated with the help of μ-open and μg-open sets. Relationships between this new class and other related classes of sets are established. Some separation axioms has also being studied. Finally, some preservation theorems have been given.
Bishwambhar Roy, Ritu Sen
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Set Covering with Our Eyes Closed [PDF]
SIAM Journal on Computing, 2008 Given a universe U of n elements and a weighted collection l of m subsets of U, the universal set cover problem is to a-priori map each element u epsi U to a set S(u) epsi l containing u, so that X sube U is covered by S(X)=UuepsiXS(u). The aim is finding a mapping such that the cost of S(X) is as close as possible to the optimal set-cover cost for X. (
Fabrizio Grandoni 0001 +5 more
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Comparison of Stapler, Single Layer and Double Layer Techniques for Colon Closure in Dogs [PDF]
, 2017 The present study was performed on 18 healthy dogs (aged 16.80±1.22 months) and body weight (17.07± 2.21 kg) to determine the best suturing technique among single layer, double layer and stapler technique for the closure of colon in dogs.
null Allah Bux Kachiwal +21 more
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On closed sets of ordinals [PDF]
Proceedings of the American Mathematical Society, 1974 We prove that every stationary set of countable ordinals contains arbitrarily long countable closed subsets. Call a set A of ordinals closed if and only if every nonempty subset of A which has an upper bound in A has its least upper bound in A. It is well known that there are BC a1 such that neither B nor a,1-B contains an uncountable closed subset.
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Topological Mappings Based on SPG*-Closed Set
Wasit Journal of Computer and Mathematics Science, 2022 In this paper, we introduce the concept of SPG*-closed mapping and continuous mapping among which SPG-closed mappings, SPG*-closed mappings and SPG**-closed mappings and the relationship between them, and also SPG-continuous mappings, SPG*-continuous ...
Prof. Dr. Ali khalaf hussain +1 more
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STRONGLY BINARY G*-CLOSED SET IN BINARY TOPOLOGICAL SPACES [PDF]
, 2023 In this paper, we introduce the concept of strongly binary g^⋆-closed sets in binary topological space and we investigate the group of structure of the set of all strongly binary g^⋆-closed ...
R. Premkumar +2 more
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Criterion of Completeness and Submaximal Ultraclones for Linear Hyperfunctions of Rank 2
Известия Иркутского государственного университета: Серия "Математика", 2023 In recent years, the direction associated with the study of maps from a finite set A to the set of all subsets of the set A, including the empty one, has been intensively developing. Such mappings are called multifunctions on A, as well as hyperfunctions
I.K. Sharankhaev
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On the union-closed sets conjecture
Discrete Mathematics, 2023 Several results about the union-closed sets conjecture are presented.
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