9 citations · 9 across the 2 of their papers we have counts for
6 papers
Factorizations of linear relations by idempotents
M. Laura Arias, Maximiliano Contino, Stefania Marcantognini
We study the class of those linear relations that can be factorized as products of idempotent relations. We provide several characterizations of this class, extending known factori…
Global solutions of approximation problems in Krein spaces
Maximiliano Contino
Three approximation problems in Krein spaces are studied, namely the indefinite weighted least squares problem and the related problems of indefinite abstract splines and smoothing…
Semiclosed multivalued projections
M. Laura Arias, Maximiliano Contino, Alejandra Maestripieri +1
A multivalued projection is an idempotent linear relation with invariant domain. We characterize multivalued projections that are operator ranges (called semiclosed) and provide se…
Matrix representations of multivalued projections and least squares problems
Maria Laura Arias, Maximiliano Contino, Alejandra Maestripieri +1
Multivalued projections are applied to the study of weighted least squares solutions of linear relations equations (or inclusions) and some of its applications. To this end a matri…
Weighted least square solutions of the equation AXB-C=0
Maximiliano Contino, Juan Giribet, Alejandra Maestripieri
Let be a Hilbert space, the algebra of bounded linear operators on and a positive operator such that i…
Weighted Procrustes problems
Maximiliano Contino, Juan Giribet, Alejandra Maestripieri
Let be a Hilbert space, the algebra of bounded linear operators on and a positive operator such that i…