Results 11 to 20 of about 3,894 (258)

Some hyperstability results of a p-radical functional equation related to Drygas mappings in non-Archimedean Banach spaces

open access: diamond, 2021
The aim of this paper is to introduce and solve the following p-radical functional equation related to Drygas mappings   f is a mapping from R into a vector space X and p ≥ 3 is an odd natural number.
Mustapha Esseghyr Hryrou   +2 more
openalex   +3 more sources

On the E-Hyperstability of the Inhomogeneous σ-Jensen’s Functional Equation on Semigroups

open access: yesAbstract and Applied Analysis, 2023
In this paper, we study the hyperstability problem for the well-known σ-Jensen’s functional equation fxy+fxσy=2fx for all x,y∈S, where S is a semigroup and σ is an involution of S. We present sufficient conditions on E⊂ℝ+S2 so that the inhomogeneous form
M. Sirouni, S. Kabbaj
doaj   +2 more sources

Hyperstability of the Drygas Functional Equation [PDF]

open access: yesJournal of Function Spaces and Applications, 2013
We use the fixed point theorem for functional spaces to obtain the hyperstability result for the Drygas functional equation on a restricted domain. Namely, we show that a function satisfying the Drygas equation approximately must be exactly the solution ...
Magdalena Piszczek, Joanna Szczawińska
doaj   +3 more sources

Hyperstability for a Generalized Class of Pexiderized Functional Equations on Monoids via Páles’ Approach

open access: yesMathematics
In this paper, we deduce some hyperstability results for a generalized class of homogeneous Pexiderized functional equations, expressed as ∑ρ∈Γfxρ.y=ℓf(x)+ℓg(y), x,y∈M, which is inspired by the concept of Ulam stability.
Rashad M. Asharabi, Muaadh Almahalebi
doaj   +2 more sources

Disc-associated proteins mediate the unusual hyperstability of the ventral disc in Giardia lamblia.

open access: yesJ Cell Sci, 2020
Giardia lamblia, a widespread parasitic protozoan, attaches to the host gastrointestinal epithelium using the ventral disc, a complex microtubule (MT) organelle.
Nosala C   +7 more
europepmc   +4 more sources

Characterization, stability and hyperstability of multi-quadratic–cubic mappings

open access: yesJournal of Inequalities and Applications, 2021
In this paper, we unify the system of functional equations defining a multi-quadratic–cubic mapping to a single equation. Applying a fixed point theorem, we study the generalized Hyers–Ulam stability of multi-quadratic–cubic mappings.
Abasalt Bodaghi, Ajda Fošner
doaj   +2 more sources

Analyzing hyperstable population models [PDF]

open access: diamondDemographic Research, 2023
OBJECTIVE: Few methods are available for analyzing populations with changing rates. Here hyperstable models are presented and substantially extended to facilitate such analyses. METHODS: Hyperstable models, where a known birth trajectory yields a consistent set of age-specific birth rates, are set out in both discrete and continuous form.
Robert Schoen
openalex   +3 more sources

Stability and Hyperstability of Ternary Hom-Multiplier on Ternary Banach Algebra

open access: goldAxioms
In this article, we investigate the 3D additive-type functional equation. Next, we introduce the ternary hom-multiplier in ternary Banach algebras using the concepts of ternary homomorphisms and ternary multipliers.
Vahid Keshavarz   +2 more
doaj   +2 more sources

Hyperstable alkenes: are they remarkably unreactive? [PDF]

open access: yesChem Sci
Maier and Schleyer first identified in silico that certain cage bicyclic olefins (alkenes) as “hyperstable”, and predicted them to be “remarkably unreactive”. However, this only applies to hydrogenation, as they were observed to undergo oxidation.
Summersgill MD   +6 more
europepmc   +3 more sources

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