**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)**

# Author = S. ‎Kabbaj
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. Operator frame for $End_{\mathcal{A}}^{\ast}(\mathcal{H})$

*Volume 08, Issue 02 , Spring 2019, , Pages 85-95*

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**Abstract **

Frames generalize orthonormal bases and allow representation of all the elements of the space. Frames play significant role in signal and image processing, which leads to many applications in informatics, engineering, medicine, and probability. ...
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##### 3. 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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##### 4. 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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##### 5. $\ast$-K-g-Frames in Hilbert $\mathcal{A}$-modules

*Volume 07, Issue 01 , Winter 2018, , Pages 63-71*