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In this paper, we establish the generalized Hyers--Ulam--Rassias stability of homomorphisms between ternary algebras associted to the generalized Jensen functional equation $r f(\frac{sx+ty}{r}) = s f(x) + t f(y)$.

泛函分析 · 数学 2021-07-23 Mohammad Sal Moslehian , Laszlo Szekelyhidi

In this paper, we establish the generalized Hyers-Ulam stability of Jordan homomorphisms and Jordan derivations between ternary algebras via the generalized Jensen equation $rf(\frac{sx+ty}{r})=sf(x)+tf(y)$.

泛函分析 · 数学 2009-03-09 M. Eshaghi Gordji , E. Rashidi , J. M. Rassias

In this paper, we proved the generalized Hyers-Ulam stability of homomorphisms in $C^*$- ternary algebras and of derivations on $C^*$-ternary algebras for the following Cauchy- Jensen functional equation…

数学物理 · 物理学 2011-01-04 Choonkil Park , John Michael Rassias , Won-Gil Park

In this paper, we investigate the generalized Hyers--Ulam--Rassias stability of the system of functional equations $$f(xy)=f(x)f(y), \qquad\qquad. f(2x+y)+f(2x-y)=2f(x+y)+2f(x-y)+12f(x), $$ on Banach algebras. Indeed we establish the…

经典分析与常微分方程 · 数学 2009-03-09 M. Eshaghi Gordji , M. Bavand Savadkouhi

Using the fixed point method of the stability of the Jensen's functional equation, we proved the Hyers-Ulam-Rassias stability and super stability of involution on Banach algebra and find some conditions that with them a Banach algebra with…

泛函分析 · 数学 2023-05-01 N. Salehi , M. R. Velayati

In this paper, we investigate homomorphisms between $C^*$-ternary algebras and derivations on $C^*$-ternary algebras, associated with the following functional equation…

算子代数 · 数学 2008-12-17 M. Bavand Savadkouhi , M. Eshaghi Gordji , N. Ghobadipour

In this paper, we achieve the general solution and the generalized Hyers-Ulam-Rassias stability for the quadratic type functional equation &f(x+y+2cz)+f(x+y-2cz)+c^2f(2x)+c^2f(2y) &=2[f(x+y)+c^2f(x+z)+c^2f(x-z)+c^2f(y+z)+c^2f(y-z)] {2.6 cm}…

泛函分析 · 数学 2008-12-31 M. Eshaghi Gordji , H. Khodaei

In this paper, we present a study on the Ulam-Hyers and Ulam-Hyers-Rassias stabilities of the solution of the fractional functional differential equation using the Banach fixed point theorem.

经典分析与常微分方程 · 数学 2018-07-18 J. Vanterler da C. Sousa , E. Capelas de Oliveira , F. G. Rodrigues

In this paper, we study the generalized Hyers-Ulam stability of Euler-Lagrange type cubic functional equation of the form \begin{align*} 2mf(x + my) + 2f(mx - y) = (m^3 + m)[f(x+ y) + f(x - y)] + 2(m^4 - 1)f(y) \end{align*} for all $x,y \in…

泛函分析 · 数学 2019-06-10 Wutiphol Sintunavarat , Nguyen Van Dung , Anurak Thanyacharoen

In this paper, we establish the stability and superstability of $J^*-$derivations in $J^*-$algebras for the generalized Jensen--type functional equation $$rf(\frac{x+y}{r})+rf(\frac{x-y}{r})= 2f(x).$$ Finally, we investigate the stability…

泛函分析 · 数学 2015-05-13 M. Eshaghi Gordji , S. Shams , A. Ebadian , M. B. Ghaemi

In this paper, by using the orthogonally fixed point method, we prove the Hyers-Ulam stability and the hyperstability of orthogonally 3-Lie homomorphisms for additive $\rho$-functional equation in 3-Lie algebras.\\ Indeed, we investigate…

泛函分析 · 数学 2020-02-18 Vahid Keshavarz , Sedigheh Jahedi , Themistocles M. Rassias

A mapping $f:(G_1,[ ]_1)\to (G_2,[ ]_2)$ between ternary semigroups will be called a ternary homomorphism if $f([xyz]_1)=[f(x)f(y)f(z)]_2$. In this paper, we prove the generalized Hyers--Ulam--Rassias stability of mappings of commutative…

数学物理 · 物理学 2021-07-23 M. Amyari , M. S. Moslehian

In this paper, we establish the general solution of the functional equation $$f(nx+y)+f(nx-y)=n^2f(x+y)+n^2f(x-y)+2(f(nx)-n^2f(x))-2(n^2-1)f(y)\eqno {0 cm}$$for fixed integers $n$ with $n\neq0,\pm1$ and investigate the generalized…

泛函分析 · 数学 2008-12-31 S. Abbaszadeh , M. Eshaghi Gordji

In this paper, we establish the conditional Hyers-Ulam-Rassias stability of the generalized Jensen functional equation $r f \left (\frac{sx+ty}{r}) = s g(x) + t h(y)$ on various restricted domains such as inside balls, outside balls, and…

泛函分析 · 数学 2021-07-23 Soon-Mo Jung , Mohammad Sal Moslehian , Prasanna K. Sahoo

In this paper, using the fixed point and direct methods, we prove the generalized Hyers-Ulam-Rassias stability of a Cauchy-Jensen additive functional equation in various normed spaces. The concept of Hyers-Ulam-Rassias stability originated…

泛函分析 · 数学 2020-02-24 H. Azadi Kenary , Th. M. Rassias

In this paper, we introduce the concept of j-hom-derivation, $j\in\{1,2\}$ and solve the new generalized additive-quadratic functional equations in the sense of ternary Banach algebras. Moreover, using the fixed point method, we prove its…

泛函分析 · 数学 2020-12-15 Sedigheh Jahedi , Vahid Keshavarz

In this paper we investigate the generalized Hyers- Ulam stability of the functional equation $$f (2x +y)+f (2x -y)= f (x + y)+ f (x -y)+2f (2x)-2f (x)$$ in fuzzy Banach spaces.

泛函分析 · 数学 2009-03-05 M. Eshaghi Gordji , N. Ghobadipour , J. M. Rassias

In this paper we introduce ternary modules over ternary algebras and using fixed point methods, we prove the stability and super-stability of ternary additive, quadratic, cubic and quartic derivations and $\sigma$-homomorphisms in such…

泛函分析 · 数学 2015-06-09 A. G. Ghazanfari , Z. Alizadeh

In this paper, we obtain the general solution of the following functional equation f(3x + y + z) + f(x + 3y + z) + f(x + y + 3z) + f(x) + f(y) + f(z) = 6f(x + y + z): We establish the Hyers-Ulam-Rassias stability of the above functional…

经典分析与常微分方程 · 数学 2015-06-09 Md. Nasiruzzaman

In this paper, we obtain the general solution and investigate the generalized Hyers-Ulam-Rassias stability for the new mixed type additive and cubic functional equation $$3f(x+3y) - f(3x + y)=12[f(x+y)+f(x-y)]-16[f(x)+f(y)] + 12f(2y) -…

泛函分析 · 数学 2015-06-23 Pasupathi Narasimman , Abasalt Bodaghi
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