English Dictionary

exponential generating function

名詞

(mathematics) A formal power series with one indeterminate, whose coefficients are fractions with factorial denominators (of index corresponding to the power of the indeterminate) and numerators which represent a sequence of numbers that is to be studied.

日本語の意味

（数学）指数的生成関数とは、1つの不定元を持つ形式的冪級数であり、各係数は、その不定元の冪に対応する階乗で割られた分数の形を取り、各分子は解析対象となる数列の項を表す。

To study the number of labelled trees on n vertices, combinatorialists often consider the exponential generating function whose coefficients are the terms of the sequence divided by factorials.

n頂点のラベル付き木の個数を調べるため、組合せ論者はしばしば、その係数が階乗で割られた項からなる一変数の形式的べき級数、すなわち指数生成関数を考える。

意味（1）

(mathematics) A formal power series with one indeterminate, whose coefficients are fractions with factorial denominators (of index corresponding to the power of the indeterminate) and numerators which represent a sequence of numbers that is to be studied.

Exponential generating functions are generally more convenient than ordinary generating functions for combinatorial enumeration problems that involve labelled objects.

exponential generating functions （ plural ）