Results 51 to 60 of about 328 (159)

On nearly Hurewicz spaces

open access: yesOpen Mathematics, 2019
In this paper we define and investigate nearly Hurewicz spaces and their star version. It is shown that a nearly Hurewicz space fits between Hurewicz and almost Hurewicz spaces.
Aqsa, Khan Moiz ud Din
doaj   +1 more source

A tropical approach to rigidity: Counting realisations of frameworks

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 2, February 2026.
Abstract A realisation of a graph in the plane as a bar‐joint framework is rigid if there are finitely many other realisations, up to isometries, with the same edge lengths. Each of these finitely many realisations can be seen as a solution to a system of quadratic equations prescribing the distances between pairs of points.
Oliver Clarke   +6 more
wiley   +1 more source

Some Common Fixed Point Theorems in Menger PM Spaces

open access: yesFixed Point Theory and Applications, 2010
Employing the common property (E.A), we prove some common fixed point theorems for weakly compatible mappings via an implicit relation in Menger PM spaces. Some results on similar lines satisfying quasicontraction condition as well as -type contraction
Tanveer M, Hasan M, Imdad M
doaj  

Menger-Hausdorff metric and common fixed point theorems in Menger probabilistic G-metric spaces [PDF]

open access: yesFixed Point Theory and Applications, 2015
AbstractIn this paper, we introduce the concepts of generalized probabilistically bounded set $\Omega^{*}$ Ω ∗ and Menger-Hausdorff metric $\widetilde{G}^{*}$ G
Tu, Qiang, Zhu, Chuanxi, Wu, Zhaoqi
openaire   +1 more source

Junctional conductance of retinal AII amacrine cell electrical synapses is decreased by NMDA receptors

open access: yesThe Journal of Physiology, Volume 604, Issue 3, Page 1373-1390, 1 February 2026.
Abstract figure legend AII amacrine cells are an important class of interneuron in the vertebrate retina. In addition to traditional chemical synapses these cells communicate with other neurons and with each other via electrical synapses. (A) Electrical synapse strength between AII amacrine cells was measured using dual whole‐cell patch‐clamp ...
Chloe Cable   +2 more
wiley   +1 more source

Fixed Points of Weakly Compatible Mappings Using Common (E.A) Like property

open access: yesLe Matematiche, 2013
The aim of this paper is to prove common fixed point theorems in Menger spaces using implicit relation and common (E.A) like property. An example is derived to support our main result. We extend our result to four finite families of self mappings.
Sunny Chauhan, B. D. Pant
doaj  

FIXED POINT THEOREM OF KANNAN-TYPE MAPPINGS IN GENERALIZED FUZZY METRIC SPACES [PDF]

open access: yesInternational Journal of Mathematical Modelling & Computations, 2016
Binayak et al in [1] proved a fixed point of generalized Kannan type-mappings in generalized Menger spaces. In this paper we extend gen- eralized Kannan-type mappings in generalized fuzzy metric spaces. Then we prove a fixed point theorem of this kind of
Esmaeil Feizi
doaj  

Die höchsten Oxidationsstufen der Seltenerdelemente und die Probleme mit den Praseodym(+5)‐Verbindungen

open access: yesAngewandte Chemie, Volume 138, Issue 1, 2 January 2026.
Alle Seltenerdelemente bilden bekanntlich tri‐ und auch di‐valente Verbindungen. Wenige tetra‐valente Verbindungen sind auch bekannt; kürzlich wurden die ersten Moleküle und Kristalle mit Praseodym(+5) synthetisiert. Der hier definierte atomare Ionisations‐Quotient IQ legt nahe, dass Ln(+4)‐Verbindungen mit geeigneten Liganden für fast alle 4f‐Elemente
Lian‐Wei Ye   +2 more
wiley   +1 more source

Supraparticles from Titania Nanoplates: Assembly, Photocatalytic Polymer Encapsulation, Functionalization, and Multifunctional Hybrid Supraparticles

open access: yesSmall Structures, Volume 7, Issue 1, January 2026.
Titania nanoplates are assembled into supraparticles (SPs) using an emulsion‐based technique. These SPs are encapsulated within a polystyrene shell, applying a surface‐initiated photocatalyzed radical polymerization procedure. By varying the duration of UV light exposure, the organic fraction of the polymer is tunable.
Jana Struck   +8 more
wiley   +1 more source

Some fixed point results in Menger spaces using a control function [PDF]

open access: yesSurveys in Mathematics and its Applications, 2009
Here we prove a probabilistic contraction mapping principle in Menger spaces. This is in line with research in fixed point theory using control functions which was initiated by Khan et al. [Bull. Austral. Math.
Krishnapada Das   +2 more
doaj  

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