Results 11 to 20 of about 607 (92)

Weakly strongly star-Menger spaces

Cubo, 2021
A space $X$ is called weakly strongly star-Menger space if for each sequence ($\mathcal{U}_{n} : n \in \omega$) of open covers of $X,$ there is a sequence $(F_n : n\in\omega)$ of finite subsets of $X$ such that $\overline{\bigcup_{n\in\omega} St(F_n ...
Gaurav Kumar, Brij K. Tyagi
doaj   +1 more source

Cayley-Menger coordinates. [PDF]

Proceedings of the National Academy of Sciences, 1986
A major obstacle in applying distance geometry techniques is the analytical complexity of the Cayley-Menger determinants that are used to characterize euclidian spaces in terms of distances between points. In this paper we show that, with the aid of a theorem of Jacobi, the complex Cayley-Menger determinants can be replaced by simpler determinants, and
Sippl, Manfred J., Scheraga, Harold A.
openaire   +3 more sources

Selection principles and covering properties in bitopological spaces

Applied General Topology, 2020
Our main focus in this paper is to introduce and study various selection principles in bitopological spaces. In particular, Menger type, and Hurewicz type covering properties like: Almost p-Menger, star p-Menger, strongly star p-Menger, weakly p-Hurewicz,
Moiz ud Din Khan, Amani Sabah
doaj   +1 more source

Menger vs. Smith? Carl Menger’s Reading of Adam Smith

Journal of Contextual Economics – Schmollers Jahrbuch, 2023
Based on some of Carl Menger's publications, his estate and archives, this article examines how the Austrian School relates to the thought of Adam Smith. Was Menger an heir of Smith, as Gustav Schmoller, leader of the German Historical School and Menger's arch-enemy, insinuated? Was there indeed a positive filiation, traceable in allusions to classical
openaire   +5 more sources

Remarks on Semi-Menger and Star Semi-Menger Spaces

Tatra Mountains Mathematical Publications, 2022
Abstract It is proved that for an extremally disconnected S-paracompact-T 2 spaces the properties semi-Menger, Menger, strongly star semi-Menger, strongly star-Menger, star semi-Menger, star-Menger, almost semi-Menger, almost Menger, almost star semi-Menger, almost star-Menger are equivalent.
Kumar, Gaurav, Tyagi, Brij Kishore
openaire   +1 more source

Superelastic behaviors of additively manufactured porous NiTi shape memory alloys designed with Menger sponge-like fractal structures

Materials & Design, 2021
Additively manufactured porous NiTi alloys hold unprecedented promise in metallic implants due to their low elastic modulus and superelastic behavior. Such porous structures are usually topologically ordered and designed with periodically-repeating unit ...
Meng Zhao, Huaibin Qing, Yongxin Wang, Jin Liang, Mengyao Zhao, Yongliang Geng, Junzhe Liang, Bingheng Lu   +7 more
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Selectively strongly star-Menger spaces and related properties

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2021
A space X is selectively strongly star-Menger (briefly, selSSM) if for each sequence ... In this paper, we study some properties of selectively strongly star-Menger spaces, the relation with related properties and give some example distinguishing the ...
Maddalena Bonanzinga, Fortunato Maesano
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On a probabilistic version of Meir-Keeler type fixed point theorem for a family of discontinuous operators

Applied General Topology, 2021
A Meir-Keeler type fixed point theorem for a family of mappings is proved in Menger probabilistic metric space (Menger PM-space). We establish that completeness of the space is equivalent to fixed point property for a larger class of mappings that ...
Ravindra K. Bisht, Vladimir Rakocević
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About uniformly Menger spaces [PDF]

Mathematica Moravica
Precompact type properties - precompactness (=totally precompactness), s-precompactness, pre-Lindelöfness, (=ℵ0-boundedness), t -boundedness - belong to the basic important invariants studied in the uniform topology.
Kanetov Bekbolot, Kanetova Dinara, Baidzhuranova Anara   +2 more
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Exploring $\mathcal{F}$-Contraction Maps in Controlled Menger Probabilistic Metric Spaces and Their Applications to Fractional Differential Equations [PDF]

Sahand Communications in Mathematical Analysis
This paper presents $\mathcal{F}$-contraction mappings in controlled Menger probabilistic metric spaces, extending the concept of Menger probabilistic metric spaces.
Reza Chaharpashlou, Ehsan Lotfali Ghasab
doaj   +1 more source