A double inequality for completely monotonic degree of a remainder for an asymptotic expansion of the trigamma function
arXiv:2003.05300 · doi:10.1080/25765299.2021.1962060
Abstract
In the paper, the author presents a double inequality for completely monotonic degree of a remainder for an asymptotic expansion of the trigamma function. This result partially confirms one in a series of conjectures on completely monotonic degrees of remainders of asymptotic expansions for the logarithm of the gamma function and for polygamma functions.
7 pages