Results 1 to 10 of about 73,682 (218)

Study of Statistical Convergence of Triple Sequences in a Topological Space

open access: yesRevista Ingeniería, Matemáticas y Ciencias de la Información
In this paper, we introduce statistical convergence of triple sequences which are defined in a topological space. Various results on statistically convergent triple sequences are produced by using the notion of triple natural density operator.
Birojit Das   +3 more
doaj   +1 more source

Fantômes en réseaux

open access: yesGéographie et Cultures, 2018
In a time of development of New Information and Communication Technol­ogies (NICTs), especially of the Internet since the mid-1990s, « networked ghosts » have emerged.
Emmanuel Trouillard
doaj   +1 more source

A Topological Structure Model and a Nonlinear Formation Model of ZnO Tetrapods

open access: yesКонденсированные среды и межфазные границы, 2019
Objectives. Development of a generalised mathematical model of hierarchical crystalline nanoforms of zinc oxide tetrapods produced by vapor transport synthesis under the conditions of chaotic particle dynamics. Methods and methodology.
Sviatoslav V. Avilov   +2 more
doaj   +1 more source

Knowledge space theory and union-closed sets conjecture [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2016
The knowledge space theory provides a framework for knowledge management. One of major problems is to find core information for a body of knowledge.
Chatchawan Panraksa
doaj  

On topological groups with a weak q-point

open access: yesApplied General Topology
In this article, firstly, we introduce the concepts of weak q-spaces and weak sq-spaces. Some properties of these spaces are discussed. Secondly, we study weak q-spaces and weak sq-spaces in topological groups in terms of preimages of submetrizable ...
Hai-Hua Lin, Li-Hong Xie
doaj   +1 more source

The relations between separately and jointly proprities of multi-valued mappings (in Ukrainian) [PDF]

open access: yesМатематичні Студії, 2011
We prove the following statement. Let $X$ be a topological space, $Y$ a topological $T_1$ first-countable space,$Z$ a metrizable locally compact $sigma$-compact space and $Fcolon Ximes Y o Z$ a close-valued separately continuous mapping.
V. K. Maslyuchenko   +2 more
doaj  

The Finite Coarse Shape Paths

open access: yesMathematics
In this paper, we introduce the notions of finite coarse shape path and finite coarse shape path connectedness of a topological space. We prove that the solenoid Σ(pn), which is known to be coarse shape path connected but not shape path connected, is not
Ivan Jelić, Ivančica Mirošević
doaj   +1 more source

SEMIGROUP ACTIONS , WEAK ALMOST PERIODICITY, AND INVARIANT MEANS [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1990
Let S be a topological semigroup acting on a topological space X. We develop the theory of (weakly) almost periodic functions on X, with respect to S, and form the (weakly) almost periodic compactifications of X and S, with respect to each other. We then
doaj  

Home - About - Disclaimer - Privacy