
Accession Number : AD0702870
Title : QUADRATIC FORMS SEMIDEFINITE OVER CONVEX CONES.
Descriptive Note : Technical rept.,
Corporate Author : STANFORD UNIV CALIF OPERATIONS RESEARCH HOUSE
Personal Author(s) : Cottle,Richard W. ; Habetler,G. J. ; Lemke,C. E.
Report Date : 18 AUG 1967
Pagination or Media Count : 28
Abstract : A differentiable function on a convex set K is said to be Kflat if its gradient vanishes at each of its zeros belonging to K. Kflatness of quadratic forms implies their constrained semidefiniteness. This furnishes a useful characterization of positive semidefinite matrices (when K is the whole space) and 'copositiveplus' matrices (when K is the nonnegative orthant). Parallel comparisions between these classes of matrices are made. (Author)
Descriptors : (*MATHEMATICAL PROGRAMMING, MATRICES(MATHEMATICS)), CONVEX SETS, INEQUALITIES, THEOREMS
Subject Categories : Operations Research
Distribution Statement : APPROVED FOR PUBLIC RELEASE