Results 51 to 60 of about 179 (144)

On the Intuitionistic Fuzzy Stability of Ring Homomorphism and Ring Derivation

open access: yesAbstract and Applied Analysis, 2013
We take into account the stability of ring homomorphism and ring derivation in intuitionistic fuzzy Banach algebra associated with the Jensen functional equation.
Jaiok Roh, Ick-Soon Chang
doaj   +1 more source

Building Fe atom–cluster composite sites using a site occupation strategy to boost electrochemical oxygen reduction

open access: yesCarbon Energy, Volume 6, Issue 3, March 2024.
We designed Fe(Cd)–CNx catalysts composed of Fe single atoms and adjacent Fe clusters. The interaction between Fe clusters and satellite FeN4 sites drives the catalyst to exhibit ultrahigh ORR activity and durability in acidic and basic media. Zinc–air cells in a liquid or flexible solid state with Fe(Cd)–CNx as the cathode exhibit high power density ...
Tingyi Zhou   +11 more
wiley   +1 more source

Combining intransitive and higher‐order effects in a coupled oscillator framework: A case study of an ant community

open access: yesEcology, Volume 105, Issue 2, February 2024.
Abstract A growing body of literature recognizes that pairwise species interactions are not necessarily an appropriate metaphorical molecule of community ecology. Two examples are intransitive competition and nonlinear higher‐order effects. While these two processes have been discussed extensively, the explicit analysis of how the two of them behave ...
John Vandermeer, Ivette Perfecto
wiley   +1 more source

Approximate *-derivations and approximate quadratic *-derivations on C*-algebras

open access: yesJournal of Inequalities and Applications, 2011
In this paper, we prove the stability of *-derivations and of quadratic *-derivations on Banach *-algebras. We moreover prove the superstability of *-derivations and of quadratic *-derivations on C*-algebras.
Park Choonkil, Jang Sun
doaj  

New insights into suspended drops: When soft matter meets acoustic levitation

open access: yesDroplet, Volume 3, Issue 1, January 2024.
We reviewed the new advances of acoustic levitation as well as the most classic literatures in soft matter field. We focused on the fundamental researches in this field using this technique, and discussed the unique physics/chemical processes involved in the acoustically levitated drops.
Hongyue Chen, Zhenyu Hong, Duyang Zang
wiley   +1 more source

On the Stability of Trigonometric Functional Equations

open access: yesAdvances in Difference Equations, 2008
The aim of this paper is to study the superstability related to the d'Alembert, the Wilson, the sine functional equations for the trigonometric functional equations as follows: f(x+y)−f(x−y)=2f(x)g(y),f(x+y)−f(x−y)=2g(x)f(y).
Gwang Hui Kim
doaj   +1 more source

Synthesis of MoS2/WS2 Nanoflower Heterostructures for Hydrogen Evolution Reaction

open access: yesInternational Journal of Energy Research, Volume 2024, Issue 1, 2024.
Over the last decades, the transition metal dichalcogenide (TMD) materials have been intensively investigated for hydrogen evolution reaction (HER). Among many TMD catalysts, MoS2 and WS2 are the most efficient materials for HER application because of their advantages including earth abundance, facile synthesis, and high catalytic activities. Herein, a
Tuan Van Nguyen   +8 more
wiley   +1 more source

Approximately Ternary Homomorphisms and Derivations on C∗-Ternary Algebras

open access: yesAbstract and Applied Analysis, 2012
We investigate the stability and superstability of ternary homomorphisms between C*-ternary algebras and derivations on C*-ternary algebras, associated with the following functional equation f((x2-x1)/3)+f((x1-3x3)/3)+f((3x1+3x3-x2)/3)=f(x1).
M. Eshaghi Gordji   +4 more
doaj   +1 more source

Superstable quasi-varieties

open access: yesAnnals of Pure and Applied Logic, 1994
A universal algebra \(A\) is affine if for some ring \(R\) there is a left \(R\)-module \(M\) which is defined on the underlying set of \(A\) so that \(A\) and \(M\) have the same polynomials. \(A\) is combinatorial if for every term \(\tau(\overline{x}, \overline{y})\) and every \(\overline {a}\), \(\overline {b}\), \(\overline{c}\), \(\overline{d}\),
Hart, B., Starchenko, S.
openaire   +2 more sources

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