2 papers
math.HO2009
Best approximation with wavelets in weighted Orlicz spaces
Maria de Natividade
Democracy functions of wavelet admissible bases are computed for weighted Orlicz Spaces in terms of its fundamental function. In particular, we prove that these bases are greedy if…
math.FA2009
Democracy functions and optimal embeddings for approximation spaces
Gustavo Garrigós, Eugenio Hernández, Maria de Natividade
We prove optimal embeddings for nonlinear approximation spaces in terms of weighted Lorentz sequence spaces, with the weights depending on the democracy functions of the basis. As…