Jeyakumar (Methods Oper. Res. 55:109–125, <CitationRef CitationID="CR12">1985</CitationRef>) and Weir and Mond (J. Math. Anal. Appl. 136:29–38, <CitationRef CitationID="CR34">1988</CitationRef>) introduced the concept of preinvex function. The preinvex functions have some interesting properties. For example, every local minimum of a preinvex function is a global minimum and...</citationref></citationref>

A class of goodness-of-fit tests based on the empirical characteristic function is studied. They can be applied to continuous as well as to discrete or mixed data with any arbitrary fixed dimension. The tests are consistent against any fixed alternative for suitable choices of the weight...