INVESTIGADORES
RUIZ Mariano Andres
artículos
Título:
Weighted projections and Riesz frames
Autor/es:
J. ANTEZANA; G. CORACH; M. RUIZ; D. STOJANOFF
Revista:
LINEAR ALGEBRA AND ITS APPLICATIONS
Editorial:
Elsevier
Referencias:
Año: 2005 p. 367 - 389
ISSN:
0024-3795
Resumen:
Let H be a (separable) Hilbert space and {e_k}_k a fixed orthonormal basis of H. Motivated by many papers on scaled projections, angles of subspaces and oblique projections, we define and study the notion of compatibility between a subspace and the abelian algebra of diagonal operators in the given basis. This is used to refine previous work on scaled projections, and to obtain a new characterization of Riesz frames.
