Results 31 to 40 of about 14,602 (198)
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
Dibenzazepin‐verbrückte Netzwerk‐Polymer‐Phthalocyanine als abbaubare heterogene Photokatalysatoren
Angewandte Chemie, EarlyView.Photodynamische Dibenzazepin‐Brücke wurde in Zink‐ und Kobalt‐Netzwerk‐Polymer‐Phthalocyanine (NP‐Pcs) eingeführt, um abbaubare heterogene Photokatalysatoren zu erhalten. Zum ersten Mal spielt die Bestrahlung mit Licht eine Schlüsselrolle beim „Design, der Verwendung und dem Abbau” von NP‐Pcs.
Erem Ahmetali +4 more
wiley +1 more source
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
Menger remainders of topological groups
, 2016 In this paper we discuss what kind of constrains combinatorial covering properties of Menger, Scheepers, and Hurewicz impose on remainders of topological groups.
Bella, Angelo +2 more
core +1 more source
Completely Baire spaces, Menger spaces, and projective sets [PDF]
Topology and its Applications, 2019 W. Hurewicz proved that analytic Menger sets of reals are $ $-compact and that co-analytic completely Baire sets of reals are completely metrizable. It is natural to try to generalize these theorems to projective sets. This has previously been accomplished by $V = L$ for projective counterexamples, and the Axiom of Projective Determinacy for positive ...
Tall, Franklin, Zdomskyy, Lyubomyr
openaire +3 more sources
On spaces with star kernel Menger
Acta Mathematica Hungarica, 2023 Given a topological property $\mathcal{P}$, a space $X$ is called star-$\mathcal{P}$ if for any open cover $\mathcal{U}$ of the space $X$, there exists a set $Y\subseteq X$ with property $\mathcal{P}$ such that $St(Y,\mathcal{U})=X$; the set $Y$ is called a star kernel of the cover $\mathcal{U}$.
Casas-De La Rosa, J. +1 more
openaire +2 more sources
British Journal of Clinical Pharmacology, EarlyView.Aims Since their emergence on the drug market, synthetic cannabinoids (SC) are still gaining increasing importance in forensic toxicology. The representatives of the so‐called new psychoactive substances have in common that they have not undergone preclinical safety studies. Hence, knowledge on toxicokinetic (TK) data is sparse.
Adrian A. Doerr +10 more
wiley +1 more source
Common fixed point theorems in Menger spaces
International Journal of Mathematics and Mathematical Sciences, 2006 We proved two common fixed point theorems for four self-mappings and two set-valued mappings with φ-contractive condition in a Menger space.
Chi-Ming Chen, Tong-Huei Chang
doaj +1 more source
A semifilter approach to selection principles [PDF]
, 2004 We develop the semifilter approach to the classical Menger and Hurewicz covering properties and show that the small cardinal g is a lower bound of the additivity number of the family of Menger subspaces of the Baire space, and under u< g every subset X ...
Zdomsky, Lubomyr
core +2 more sources
The combinatorics of the Baer-Specker group
, 2010 Denote the integers by Z and the positive integers by N. The groups Z^k (k a natural number) are discrete, and the classification up to isomorphism of their (topological) subgroups is trivial.
A. Krawczyk +34 more
core +1 more source