Positive projections of symmetric matrices and Jordan algebras

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

Bent Fuglede, Søren Tolver Jensen

An elementary proof is given that the projection from the space of all symmetric p×p matrices onto a linear subspace is positive if and only if the subspace is a Jordan algebra. This solves a problem in a statistical model.
OriginalsprogEngelsk
TidsskriftExpositiones Mathematicae
Vol/bind31
Udgave nummer3
Sider (fra-til)295-303
ISSN0723-0869
DOI
StatusUdgivet - 2013

ID: 37567605