TITLE:
Uniqueness and Existence of search directions for semidefinite programming (SDP)

authors:
Kathrin Schaecke, Levent Tuncel, Henry Wolkowicz
Dept. Combinatorics and Optimization
University of Waterloo

ABSTRACT:
We study uniqueness and existence conditions for various families of
Newton based search directions for Semidefinite Programming (SDP).
In particular, we strengthen the Monteiro-Zanjacomo condition as
well as the Shida-Shindoh-Kojima condition for the
Alizadeh-Haeberly-Overton (AHO) search direction.