Results 81 to 90 of about 547 (94)

On superstability of derivations in Banach algebras

Open Mathematics
In this article, we consider some types of derivations in Banach algebras. In detail, we investigate the question of whether the superstability can be achieved under some conditions for some types of derivations, such as Jordan derivations, generalized ...
Chang Ick-Soon, Kim Hark-Mahn, Roh Jaiok
doaj   +1 more source

Local stability of the Pexiderized Cauchy and Jensen's equations in fuzzy spaces

Journal of Inequalities and Applications, 2011
Lex X be a normed space and Y be a Banach fuzzy space. Let D = {(x, y) ∈ X × X : ||x|| + ||y|| ≥ d} where d > 0. We prove that the Pexiderized Jensen functional equation is stable in the fuzzy norm for functions defined on D and ...
Kang Jung Im, Cho Yeol Je, Najati Abbas
doaj  

Non-Archimedean stabilities of multiplicative inverse µ-functional inequalities

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
This study is motivated through the interesting non-Arcchimedean stability results of ρ-inequalities and ρ-equations arising from linear, second power, third power and fourth power mappings.
Dutta Hemen, Senthil Kumar B. V., Suresh S.   +2 more
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Functional equations in mathematical analysis

, 2012
T. Rassias, J. Brzdȩk
semanticscholar   +1 more source

Stability of the second order partial differential equations

Journal of Inequalities and Applications, 2011
We say that a functional equation (ξ) is stable if any function g satisfying the functional equation (ξ) approximately is near to a true solution of (ξ).
Ghaemi MB, Cho YJ, Alizadeh B, Gordji M Eshaghi   +3 more
doaj  

On approximate homomorphisms: a fixed point approach

, 2012
M. Gordji, Zahra Alizadeh, H. Khodaei, Choonkill Park   +3 more
semanticscholar   +1 more source

On linear functional equations and completeness of normed spaces [PDF]

, 2017
Fosner, Ajda, Ger, Roman, Gilányi, Attila, Moslehian, Mohammad Sal   +3 more
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Stability of the general quintic functional equation

International Journal of Mathematical Analysis, 2021
The general quintic functional equation is a generalization of many functional equations such as the additive, the general quadratic, the general cubic, and the general quartic functional equation.
S. Jin, Yang-Hi Lee
semanticscholar   +1 more source

An Instructive Treatment of a Generalization of Găvruţă’s Stability Theorem

Sarajevo Journal of Mathematics
We prove several useful theorems on Hyers sequences and their pointwise limits in quite natural ways which make a straightforward generalization of Găvruţă''s stability theorem rather plausible.   2000 Mathematics Subject Classification.
Ester Gselmann, Á. Száz
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Remark on the Second Bounded Cohomology of Amalgamated Product of Groups

Sarajevo Journal of Mathematics
For any cardinal number ${\mathcal M}$ we construct examples of amalgamated products and HNN extensions of groups such that the dimension of the space of second bounded cohomologies is at least ${\mathcal M}$.
V. A. Faĭziev, Prasanna K. Sahoo
semanticscholar   +1 more source