Schur complements and Banachiewicz-Schur forms
The electronic journal of linear algebra, Tome 13 (2005), pp. 405-418.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: Through the matrix rank method, this paper gives necessary and sufficient conditions for a partitioned matrix to have generalized inverses with Banachiewicz-Schur forms. In addition, this paper investigates the idempotency of generalized Schur complements in a partitioned idempotent matrix.
Classification : 15A03, 15A09
Keywords: banachiewicz-Schur form, generalized inverse, generalized Schur complement, idempotent matrix, matrix rank method, maximal rank, minimal rank, Moore-Penrose inverse, partitioned matrix
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     title = {Schur complements and {Banachiewicz-Schur} forms},
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Tian, Yongge; Takane, Yoshio. Schur complements and Banachiewicz-Schur forms. The electronic journal of linear algebra, Tome 13 (2005), pp. 405-418. http://geodesic.mathdoc.fr/item/ELA_2005__13__a0/