Refinements of lower bounds for polygamma functions

Guo, Bai-Ni; Qi, Feng

doi:10.1090/S0002-9939-2012-11387-5

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ISSN 1088-6826(online) ISSN 0002-9939(print)

Refinements of lower bounds for polygamma functions

Authors: Bai-Ni Guo and Feng Qi
Journal: Proc. Amer. Math. Soc. 141 (2013), 1007-1015
MSC (2010): Primary 33B15; Secondary 26D07
Posted: August 9, 2012
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Abstract: In the paper, some lower bounds for polygamma functions are refined. Moreover, several open problems are posed.

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