Certain inequalities involving the $q$-deformed Gamma function
Problemy analiza, Tome 4 (2015) no. 1, pp. 57-65

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This paper is inspired by the work of J. Sándor in 2006. In the paper, the authors establish some double inequalities involving the ratio $ \frac{\Gamma_{q}(x+1)}{ \Gamma_{q} \left( x+\frac{1}{2}\right)}$, where $\Gamma_{q}(x)$ is the $q$-deformation of the classical Gamma function denoted by $\Gamma(x)$. The method employed in presenting the results makes use of Jackson's $q$-integral representation of the $q$-deformed Gamma function. In addition, Hölder's inequality for the $q$-integral, as well as some basic analytical techniques involving the $q$-analogue of the psi function are used. As a consequence, $q$-analogues of the classical Wendel's asymptotic relation are obtained. At the end, sharpness of the inequalities established in this paper is investigated.
Keywords: Gamma function, $q$-deformed Gamma function, $q$-integral, inequality.
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K. Nantomah; E. Prempeh. Certain inequalities involving the $q$-deformed Gamma function. Problemy analiza, Tome 4 (2015) no. 1, pp. 57-65. http://geodesic.mathdoc.fr/item/PA_2015_4_1_a3/