On (β, α) - Logarithmically Convex Functions in the First and Second Sense with Their Inequalities

Author(s):  
Abdullah Açıkel ◽  
Mevlüt Tunç
Filomat ◽  
2013 ◽  
Vol 27 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Rui-Fang Bai ◽  
Qi Feng ◽  
Xi Bo-Yan

Filomat ◽  
2017 ◽  
Vol 31 (2) ◽  
pp. 227-245 ◽  
Author(s):  
Najla Alarifi ◽  
Rosihan Ali ◽  
V. Ravichandran

Let f be a normalized analytic function in the open unit disk of the complex plane satisfying zf'(z)/f(z) is subordinate to a given analytic function ?. A sharp bound is obtained for the second Hankel determinant of the kth-root transform z[f(zk)/zk]1/k. Best bounds for the Hankel determinant are also derived for the kth-root transform of several other classes, which include the class of ?-convex functions and ?-logarithmically convex functions. These bounds are expressed in terms of the coefficients of the given function ?, and thus connect with earlier known results for particular choices of ?.


Filomat ◽  
2015 ◽  
Vol 29 (7) ◽  
pp. 1565-1580
Author(s):  
Jinrong Wang ◽  
Yumei Liao ◽  
Jian Deng

The purpose of this paper is to establish some refinements of Riemann-Liouville fractional Hermite-Hadamard inequalities for (?,m)-logarithmically convex functions. By using our fractional integrals identities, we present some interesting and new left type fractional Hermite-Hadamard inequalities for once and twice differentiable (?,m)-logarithmically convex functions via powerful series.


1965 ◽  
Vol 17 ◽  
pp. 383-395 ◽  
Author(s):  
Albert Edrei ◽  
Wolfgang H. J. Fuchs

If f(z) is a non-constant, entire function, then Hadamard's three-circles theorem asserts thatis a convex, increasing function of log r. Hence, by well-known properties of logarithmically convex functions,


2014 ◽  
Vol 23 (2) ◽  
pp. 253-260
Author(s):  
MEVLUT TUNC ◽  
◽  
HAVVA KAVURMACI-ONALAN ◽  

In this paper, the authors establish some new Hadamard type inequalities for s-logarithmically convex functions in the second sense via fractional integrals by using Lemma 1.1 which has been proved by Sarıkaya et al.


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