A general analytical solution for calculating \(n\)-fold convolution power of exponential-sum distribution functions
The authors find an explicit formula for the \(n\)-fold convolution \(f*f*\cdots *f\) on \((0,\infty)\), where \(f(t)=\sum_{i=1}^m\alpha_ie^{-\lambda_it}\), and \(\alpha_i,\lambda_i\) are constants.
scientific article; zbMATH DE number 1861240