Lambert series

In mathematics, a Lambert series, named for Johann Heinrich Lambert, is a series taking the form

It can be resummed formally by expanding the denominator:

where the coefficients of the new series are given by the Dirichlet convolution of a_n with the constant function 1(n) = 1:

单词	Lambert series
释义	Lambert series 英语百科 Lambert series In mathematics, a Lambert series, named for Johann Heinrich Lambert, is a series taking the form It can be resummed formally by expanding the denominator: where the coefficients of the new series are given by the Dirichlet convolution of a_n with the constant function 1(n) = 1:
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