Some Properties of Symmetric Quasi-Definite Matrices
Alan D. George, Х. Д. Икрамов, Andrey B. Kucherov · SIAM Journal on Matrix Analysis and Applications · 2000
Symmetric quasi-definite matrices arise in numerous applications, notably in interior point methods in mathematical programming. Several authors have derived various properties of these matrices. This article provides a list of some previously known properties and adds a number of others that are believed to be new.