Monotonic and Logarithmically Convex Properties of a Function Involving Gamma Functions

Monotonic and Logarithmically Convex Properties of a Function Involving Gamma Functions

A logarithmically completely monotonic function involving the ratio of gamma functions

In the paper, the authors first survey and review some logarithmically completely monotonic functions involving the gamma function and its various ratios, and then find sufficient conditions for a function involving the ratio of two gamma functions and originating from the coding gain to be logarithmically completely monotonic.

CERTAIN LOGARITHMICALLY N-ALTERNATING MONOTONIC FUNCTIONS INVOLVING GAMMA AND q-GAMMA FUNCTIONS

In the paper, three basic properties of the logarithmically N alternating monotonic functions are established and the monotonicity results of some functions involving the gamma and q-gamma functions, which are obtained in [W. E. Clark and M. E. H. Ismail, Inequalities involving gamma and psi functions, Anal. Appl. (Singap.) 1 (2003), no. 1, 129–140.], are generalized to the logarithmically N -a...

Two Logarithmically Completely Monotonic Functions Connected with Gamma Function

In this paper, the logarithmically complete monotonicity results of the functions [Γ(1 + x)]y/Γ(1 + xy) and Γ(1 + y)[Γ(1 + x)]y/Γ(1 + xy) are established.

Some Logarithmically Completely Monotonic Functions Related to the Gamma Function

converges for x ∈ [0,∞). This tells us that f ∈ C[[0,∞)] if and only if it is a Laplace transform of the measure α. There have been a lot of literature about the completely monotonic functions, for examples, [3, 4, 5, 22, 25, 32, 34, 35, 39, 40, 42, 58, 60, 61, 62, 63, 66] and references therein. Recall also [6, 43, 47] that a positive function f is said to be logarithmically completely monoton...