Results 21 to 30 of about 11,369 (179)
Karpatsʹkì Matematičnì Publìkacìï, 2016 Coupled fixed point problems have attracted much attention in recent times. The aim of this paper is to extend the notions of E.A. property, CLR property and JCLR property for coupled mappings in Menger metric space and use this notions to generalizes ...
L. Ben Aoua, A. Aliouche
doaj +1 more source
A Menger-like property of tree-cut width
Journal of Combinatorial Theory, Series B, 2021 In 1990, Thomas proved that every graph admits a tree decomposition of minimum width that additionally satisfies a certain vertex-connectivity condition called leanness [A Menger-like property of tree-width: The finite case. Journal of Combinatorial Theory, Series B, 48(1):67-76, 1990].
Giannopoulou, Archontia +3 more
openaire +6 more sources
Weak covering properties and selection principles [PDF]
, 2012 No convenient internal characterization of spaces that are productively Lindelof is known. Perhaps the best general result known is Alster's internal characterization, under the Continuum Hypothesis, of productively Lindelof spaces which have a basis of ...
Babinkostova, L. +2 more
core +3 more sources
Products of sequentially compact spaces and compactness with respect to a set of filters [PDF]
, 2014 Let $X$ be a product of topological spaces. $X$ is sequentially compact if and only if all subproducts by $\leq \mathfrak s$ factors are sequentially compact. If $\mathfrak s = \mathfrak h$, then $X$ is sequentially compact if and only if all factors are
Lipparini, Paolo
core +3 more sources
On some properties of Hurewicz, Menger, and Rothberger [PDF]
Fundamenta Mathematicae, 1988 A metric space X has property C iff for every sequence \(\{\epsilon_ n ...
Miller, Arnold W., Fremlin, David H.
openaire +1 more source
The philosophy of Austrian economics [PDF]
, 1994 Review of The Philosophical Origins of Austrian Economics, by David Gordon.
Smith, Barry
core +1 more source
Some observations on the mildly Menger property and topological games
Filomat, 2022 In this paper, we defined two new games - the mildly Menger game and the compact-clopen game. In a zero-dimensional space, the Menger game is equivalent to the mildly Menger game and the compact-open game is equivalent to the compact-clopen game. An example is given for a space on which the mildly Menger game is undetermined.
Bhardwaj, M., Osipov, A. V.
openaire +3 more sources
Erratum to " Almost Menger property in bitopological spaces"
, 2022 In this paper, theorem 3.2 and theorem 4.1 of Özçağ and Eysen [S. Özçağ and A.E. Eysen, Almost Menger property in bitopological spaces, Ukrainian Math. J., {\bf 68}, No 6, 950-958 (2016)] are proven to be incorrect. An example is provided to disprove them and thus, correct versions of the theorems are restated.
Acharjee, Santanu, Goswami, Kabindra
openaire +2 more sources
Hereditary topological diagonalizations and the Menger-Hurewicz Conjectures [PDF]
, 2010 We consider the question, which of the major classes defined by topological diagonalizations of open or Borel covers is hereditary. Many of the classes in the open case are not hereditary already in ZFC, and none of them is provably hereditary.
Bartoszynski, Tomek, Tsaban, Boaz
core +3 more sources
Common fixed point theorem of six self-mappings in Menger spaces using (CLRST) property
Open Mathematics, 2018 In this paper, we study the existence and uniqueness of common fixed point of six self-mappings in Menger spaces by using the common limit range property (denoted by (CLRST)) of two pairs.
Liu Xiao-lan +4 more
doaj +1 more source