Asymptotic Formulas and Inequalities for the Gamma Function in Terms of the Tri-Gamma Function

作者：Mortici, Cristinel^*; Qi, Feng

来源：Results in Mathematics, 2015, 67(3-4): 395-402.

DOI：10.1007/s00025-015-0439-1

• Asymptotic formulas
• inequalities
• factorial
• gamma function
• tri-gamma function

In the paper, the authors establish some asymptotic formulas and double inequalities for the factorial n ! and the gamma function Gamma in terms of the tri-gamma function psi'.

• 出版日期2015-6
• 单位内蒙古民族大学; 天津工业大学