The input argument fun refers to an IML module that specifies a function that returns f, a vector of length m for least-squares subroutines or a scalar for other optimization subroutines. The returned ...

Consider a joint cumulant of derivatives of the log likelihood function. This cumulant will depend on the parameter of the model, and it is proved that its derivative with respect to the parameter is ...

Harmonic mappings and logharmonic functions occupy a central role in complex analysis and applied mathematics. Harmonic mappings are functions that satisfy Laplace’s equation and are frequently ...