**Volume 09 (2020)**

**Volume 08 (2019)**

**Volume 07 (2018)**

**Volume 06 (2017)**

**Volume 05 (2016)**

**Volume 04 (2015)**

**Volume 03 (2014)**

**Volume 02 (2013)**

**Volume 01 (2012)**

# Keywords = hyperstability
Number of Articles: 5

##### 1. 2-Banach stability results for the radical cubic functional equation related to quadratic mapping

*Volume 09, Issue 01 , Winter 2020, , Pages 35-51*

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**Abstract **

The aim of this paper is to introduce and solve the generalized radical cubic functional equation related to quadratic functional equation$$f\left(\sqrt[3]{ax^{3}+by^{3}}\right)+f\left(\sqrt[3]{ax^{3}-by^{3}}\right)=2a^{2}f(x)+2b^{2}f(y),\;\; x,y\in\mathbb{R},$$for a mapping $f$ from $\mathbb{R}$ ...
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##### 2. Generalized hyperstability of the cubic functional equation in ultrametric spaces

*Volume 08, Issue 02 , Spring 2019, , Pages 97-104*

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**Abstract **

In this paper, we present the generalized hyperstability results of cubic functional equation in ultrametric Banach spaces using the fixed point method.
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##### 3. A new type of Hyers-Ulam-Rassias stability for Drygas functional equation

*Volume 07, Issue 04 , Autumn 2018, , Pages 251-260*

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**Abstract **

In this paper, we prove the generalized Hyers-Ulam-Rassias stability for the Drygas functional equation$$f(x+y)+f(x-y)=2f(x)+f(y)+f(-y)$$ in Banach spaces by using the Brz\c{d}ek's fixed point theorem. Moreover, we give a general result on the hyperstability of this equation. Our results are improvements ...
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##### 4. On a new type of stability of a radical cubic functional equation related to Jensen mapping

*Volume 07, Issue 04 , Autumn 2018, , Pages 281-292*

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**Abstract **

The aim of this paper is to introduce and solve the radical cubic functional equation $f\left(\sqrt[3]{x^{3}+y^{3}}\right)+f\left(\sqrt[3]{x^{3}-y^{3}}\right)=2f(x)$. We also investigate some stability and hyperstability results for the ...
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##### 5. A fixed point method for proving the stability of ring $(\alpha, \beta, \gamma)$-derivations in $2$-Banach algebras

*Volume 06, Issue 04 , Autumn 2017, , Pages 269-276*