Objective Function and Derivatives 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 ...

Harmonic mappings are functions that satisfy Laplace’s equation and are frequently encountered in the study of potential theory, fluid dynamics, and geometric function theory.

When estimating derivatives of regression functions from noisy data, a number of additional problems arise compared with the estimation of the regression function itself. Linear methods, such as ...