Approximation of Integrable Functions by Wavelet Expansions
Włodzimierz Łenski, Bogdan Szal · Results in Mathematics · 2016
Walter (J Approx Theory 80:108–118, 1995 ), Xiehua (Approx Theory Appl 14(1):81–90, 1998 ) and Lal and Kumar (Lobachevskii J Math 34(2):163–172, 2013 ) established results on pointwise and uniform convergence of wavelet expansions. Working in this direction new more general theorems on degree of pointwise approximation by such expansions have been proved.