Results 31 to 40 of about 3,988,102 (209)
Products of Menger spaces: A combinatorial approach
Annals of Pure and Applied Logic, 2017 We construct Menger subsets of the real line whose product is not Menger in the plane. In contrast to earlier constructions, our approach is purely combinatorial. The set theoretic hypothesis used in our construction is far milder than earlier ones, and holds in all but the most exotic models of real set theory.
Piotr Szewczak, Boaz Tsaban
openaire +3 more sources
New dynamic fixed point results in Menger spaces [PDF]
Surveys in Mathematics and its Applications, 2023 The objective of this paper is to generalize and improve some results in fixed point theorems in both complete metric space and Menger space. These results are generalizations of the analogous ones recently proved by Khojasteh [5], Demma [1], Yildirim ...
Besma Laouadi +4 more
doaj
On variants of θ-Menger spaces
Filomat, 2023 In this paper we further study ?-Menger, ?-almost Menger and ?-weakly Menger properties [13] and investigate their relationships with other selective covering properties. We prove that in extremally disconnected semi-regular spaces, the properties viz.
Gaurav Kumar, Brij Tyagi
openaire +1 more source
, 2021 Ricostruzione del contesto storico della polemica sulle università austriache tra Carl Menger, Karl Lueger, Alois J.
Marco Menon
core
The Strong Nash‐Williams Orientation Theorem for Rayless Graphs
Journal of Graph Theory, EarlyView.ABSTRACT In 1960, Nash‐Williams proved his strong orientation theorem that every finite graph has an orientation in which the number of arc‐disjoint directed paths between any two vertices is at least half the number of undirected edge‐disjoint paths between them (rounded down).
Max Pitz, Jacob Stegemann
wiley +1 more source
A fixed point theorem in Menger space
, 1970 The purpose of this paper is to introduce the concept of weakly compatible maps in Menger space and prove a common fixed point theorem in this space.2010 Mathematics Subject Classification: 54H25.Keywords: Triangle norm; Menger space; Fixed point theorem;
Sunny Chauhan, BD Pant
core +1 more source
Strategic search: Adaptation of internal fit and market positioning under competition
Strategic Management Journal, EarlyView.Abstract Research Summary Firms seeking competitive advantage need both internal fit and a distinctive market position, yet strategy research says little about how the search for the two is related. We develop a model of strategic search that integrates an NK landscape with differentiated Cournot competition, allowing a firm's position to shape both ...
Gianluigi Giustiziero +2 more
wiley +1 more source
Some remarks on almost Menger spaces and weakly Menger spaces
Publications de l'Institut Mathematique, 2015 A space X is almost Menger (weakly Menger) if for each sequence (Un : n ? N) of open covers of X there exists a sequence (Vn : n ? N) such that for every n ? N, Vn is a finite subset of Un and ?n?N ?{V : V ? Vn} = X (respectively, ?n?N ?{V : V ? Vn} = X).
openaire +2 more sources
Kannan-type cyclic contraction results in $2$-Menger space [PDF]
Mathematica Bohemica, 2016 In this paper we establish Kannan-type cyclic contraction results in probabilistic 2-metric spaces. We use two different types of $t$-norm in our theorems. In our first theorem we use a Hadzic-type $t$-norm.
Binayak Samaddar Choudhury +1 more
doaj +1 more source
Applied General Topology, 2023 In this paper, we prove the existence of fixed point results for set-valued mappings in Menger probabilistic metric spaces equipped with an amorphous binary relation and a Hadžić -type t-norm.
Gopi Prasad +2 more
doaj +1 more source