Nonnegativity of Schur complements of nonnegative idempotent matrices.
Friedland, Shmuel ; Virnik, Elena
ELA. The Electronic Journal of Linear Algebra [electronic only], Tome 17 (2008), p. 426-435 / Harvested from The Electronic Library of Mathematics
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Publié le : 2008-01-01
EUDML-ID : urn:eudml:doc:129408 
@article{05346333,
     title = {Nonnegativity of Schur complements of nonnegative idempotent matrices.},
     journal = {ELA. The Electronic Journal of Linear Algebra [electronic only]},
     volume = {17},
     year = {2008},
     pages = {426-435},
     zbl = {1151.15008},
     language = {en},
     url = {http://dml.mathdoc.fr/item/05346333}
}

Friedland, Shmuel; Virnik, Elena. Nonnegativity of Schur complements of nonnegative idempotent matrices.. ELA. The Electronic Journal of Linear Algebra [electronic only], Tome 17 (2008) pp. 426-435. http://gdmltest.u-ga.fr/item/05346333/