نتایج جستجو برای: almost additive maps

تعداد نتایج: 369541  

Journal: :Journal of Combinatorial Theory, Series B 1995

Journal: :bulletin of the iranian mathematical society 0
t. ‎ghasemi honary‎ department of‎ ‎mathematics, ‎kharazmi university‎, ‎1561836314, tehran‎, ‎iran m. omidi department of‎ ‎mathematics, ‎kharazmi university‎, ‎1561836314, tehran‎, ‎iran a. h. sanatpour department of‎ ‎mathematics, ‎kharazmi university‎, ‎1561836314, tehran‎, ‎iran

for fr$acute{mathbf{text{e}}}$chet algebras $(a, (p_n))$ and $(b, (q_n))$, a linear map $t:arightarrow b$ is textit{almost multiplicative} with respect to $(p_n)$ and $(q_n)$, if there exists $varepsilongeq 0$ such that $q_n(tab - ta tb)leq varepsilon p_n(a) p_n(b),$ for all $n in mathbb{n}$, $a, b in a$, and it is called textit{weakly almost multiplicative} with respect to $(p_n)$ and $(q_n)$,...

H. Khodaei M. Kamyar

Moslehian  and Mirmostafaee, investigated the fuzzystability problems for the Cauchy additive functional equation, the Jensen additivefunctional equation and the cubic functional equation in fuzzyBanach spaces. In this paper, we investigate thegeneralized Hyers–-Ulam--Rassias stability of the generalizedadditive functional equation with $n$--variables, in fuzzy Banachspaces. Also, we will show ...

Journal: :Bulletin of the Korean Mathematical Society 2009

Journal: :bulletin of the iranian mathematical society 2015
t. ‎ghasemi honary‎ m. omidi a. h. sanatpour

for fr$acute{mathbf{text{e}}}$chet algebras $(a, (p_n))$ and $(b, (q_n))$, a linear map $t:arightarrow b$ is textit{almost multiplicative} with respect to $(p_n)$ and $(q_n)$, if there exists $varepsilongeq 0$ such that $q_n(tab - ta tb)leq varepsilon p_n(a) p_n(b),$ for all $n in mathbb{n}$, $a, b in a$, and it is called textit{weakly almost multiplicative} with respect to $(p_n)$ and $(q_n)$,...

Journal: :Linear Algebra and its Applications 1991

Journal: :bulletin of the iranian mathematical society 2015
a. taghavi h. rohi v. darvish

let $mathcal{a}$ and $mathcal{b}$ be two $c^{*}$-algebras such that $mathcal{b}$ is prime. in this paper, we investigate the additivity of maps $phi$ from $mathcal{a}$ onto $mathcal{b}$ that are bijective, unital and satisfy $phi(ap+eta pa^{*})=phi(a)phi(p)+eta phi(p)phi(a)^{*},$ for all $ainmathcal{a}$ and $pin{p_{1},i_{mathcal{a}}-p_{1}}$ where $p_{1}$ is a nontrivial projection in $mathcal{a...

Journal: :Geometric and Functional Analysis 2023

Abstract We show that every sufficiently large integer is a sum of prime and two almost squares, also smooth number squares. The such representations the expected order magnitude. likewise treat shifted primes $$p-1$$ p - 1 as sums methods involve combi...

Journal: :Advances in Difference Equations 2012

Journal: :international journal of nonlinear analysis and applications 2010
h. khodaei m. kamyar

moslehian  and mirmostafaee, investigated the fuzzystability problems for the cauchy additive functional equation, the jensen additivefunctional equation and the cubic functional equation in fuzzybanach spaces. in this paper, we investigate thegeneralized hyers–-ulam--rassias stability of the generalizedadditive functional equation with $n$--variables, in fuzzy banachspaces. also, we will show ...

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