Results 71 to 80 of about 103 (93)

Asymptotic aspect of derivations in Banach algebras. [PDF]

J Inequal Appl, 2017
Roh J, Chang IS.
europepmc   +1 more source

Absolutely minimal semi-Lipschitz extensions. [PDF]

Calc Var Partial Differ Equ
Daniilidis A, Lê TM, Venegas FM.
europepmc   +1 more source

On approximation of approximately generalized quadratic functional equation via Lipschitz criteria

Quaestiones Mathematicae, 2019
Let G be an Abelian group with a metric d and E ba a normed space. For any f : G → E we define the generalized quadratic difference of the function f by the formulaQkf(x, y) := f(x + ky) + f(x - ky) - f(x + y) - f(x - y) - 2(k2 - 1) f(y)for all x, y ∈ G ...
Iz-Iddine El-Fassi
exaly   +1 more source

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On stability and nonstability of systems of functional equations

Quaestiones Mathematicae, 2021
Madjid Eshaghi, Hamid Khodaei
exaly  

Stability of a Jensen type functional equation

Banach Journal of Mathematical Analysis, 2007
Young-Su Lee, Soon-Yeong Chung
exaly  

Hyers--Ulam stability of a polynomial equation

Banach Journal of Mathematical Analysis, 2009
Yongjin Li
exaly  

Lipschitz stability of the k-quadratic functional equation

Quaestiones Mathematicae, 2017
Abdellatif Chahbi, Iz-Iddine El-Fassi, Samir Kabbaj   +2 more
exaly  

On some functional equations and their stability

Journal of Interdisciplinary Mathematics, 2020
Abbas Najati, Prasanna K Sahoo
exaly  

The Hyers-Ulam stability for two functional equations in a single variable

Banach Journal of Mathematical Analysis, 2008
Dorel Mihet
exaly