关于含有Stirling公式的几个双边不等式的注记  

A Remark on Some Two-sided Inequalities Implying Stirling’s Formula

作　　者：徐沥泉 徐利治[2] XU Li-quan;HU Li-zhi(Wuxi Institute of Education Science,Wuxi 214001,China;Department of Mathematics,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]无锡市教育科学研究院,江苏无锡214001 [2]大连理工大学数学科学学院,辽宁大连116024

出　　处：《数学的实践与认识》2018年第16期310-312,共3页Mathematics in Practice and Theory

摘　　要：关注三个都含有Stirling公式形式简短易用的双边不等式.对其中之一得出了新的下界（左边）不等式.又根据双边逼近的观点,验证了改进后的不等式在逼近精度上优于Robbins的双边不等式.Here concerned are several simpler an improvement of the two others. It is found given by our improved inequality is better than two-sided inequalities for n!. One of those is that the degree of two-sided approximation that by Robbins＇s two-sided inequality.

关 键 词：双边不等式 双边逼近 STIRLING公式 

分 类 号：O178[理学—数学]