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A combinatorial proof for the relation between the exponential function and the logarithmic function
Aequationes Mathematicae ( IF 0.9 ) Pub Date : 2020-01-21 , DOI: 10.1007/s00010-020-00709-2
Ayaka Ishikawa , Hideaki Morita

Two combinatorial identities are considered. These identities imply that \(\exp \) and \(\log \) are mutually inverse to one another even in the case where the variable is a noncommutative symbol. The proofs are given by enumeration of permutations and flags in a finite set.

中文翻译:

指数函数与对数函数之间关系的组合证明

考虑两个组合身份。这些标识意味着\(\ exp \)和\(\ log \)彼此相反,即使在变量是非交换符号的情况下。证明是通过对有限集合中的排列和标志进行枚举来给出的。
更新日期:2020-01-21
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