2 papers
math.CA2009
Extra Invariance of Shift-Invariant Spaces on LCA Groups
Magalí Anastasio, Carlos Cabrelli, Victoria Paternostro
Let G be an LCA group and K a closed subgroup of G. A closed subspace of L^2(G) is called K-invariant if it is invariant under translations by elements of K. Assume now that H is a…
math.CA2009
Sampling in a Union of Frame Generated Subspaces
Magalí Anastasio, Carlos Cabrelli
A new paradigm in Sampling theory has been developed recently by Lu and Do. In this new approach the classical linear model is replaced by a non-linear, but structured model consis…