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Limit formulas related to the p-gamma and p-polygamma functions at their singularities

Yin Li (Binzhou University, Department of Mathematics, Binzhou City, Shandong Province, China)
Huang Li-Guo (Binzhou University, Department of Mathematics, Binzhou City, Shandong Province, China)

In this paper, we mainly give much simple proof to Theorem 1.1 and (1.6) of Theorem 1.2 posed in the paper ”F. Qi, Limit formulas for ratios between derivatives of the gamma and digamma functions at their singularities, Filomat 27 (2013) 601-604.”

Keywords: limit formula, singularity, ratio, derivative, p-gamma