2 papers
math.FA2013
Bracket map for Heisenberg group and the characterization of cyclic subspaces
Davide Barbieri, Eugenio Hernandez, Azita Mayeli
The bracket map was originally considered for locally compact abelian groups. In this work we extend the study of bracket maps to the noncommutative setting, providing characteriza…
math.FA2012
Lebesgue type inequalities for quasi-greedy bases
Gustavo Garrigós, Eugenio Hernández, Timur Oikhberg
We show that for quasi-greedy bases in real or complex Banach spaces the error of the thresholding greedy algorithm of order N is bounded by the best N- term error of approximation…