2016/04/25 by Berná, Pablo M., Blasco, Óscar
#FOS: Mathematics #Functional Analysis (math.FA)
paper · doi:10.48550/arxiv.1604.07260
We shall present a new characterization of greedy bases and 1-greedy bases in terms of certain functionals defined using distances to one dimensional subspaces generated by the basis. We also introduce a new property that unifies the notions of unconditionality and democracy and allows us to recover a better dependence on the constants.