Series representations of the remainders in the expansions for certain functions with applications

Chao-Ping Chen, Richard B. Paris

Research output: Contribution to journalArticle

1 Citation (Scopus)
37 Downloads (Pure)


We present a summary of the series representations of the remainders in the expansions in ascending powers of t of 2/(et+1), sech t and coth t and establish simple bounds for these remainders when t>0. Several applications of these expansions are given which enable us to deduce some inequalities and completely monotonic functions associated with the ratio of two gamma functions. In addition, we derive a (presumably new) quadratic recurrence relation for the Bernoulli numbers Bn.
Original languageEnglish
Pages (from-to) 1443–1457
Number of pages15
JournalResults in Mathematics
Issue number3-4
Early online date12 Oct 2016
Publication statusPublished - Jun 2017


Cite this