海量图书期刊资源，随时随地畅享阅读乐趣
On the coefficients of expansions in bases of smooth functions of several variablesA. V. Meleshkina · 2011
Fourier coefficients of characteristic functions of intervals with respect to a complete orthonormal system bounded inLp([0, 1]), 2Meleshkina, A. V. · Mathematical Notes · 2015