BMO-estimation and Almost Everywhere Exponential Summability of Quadratic Partial Sums of Double Fourier Series
arXiv:1303.0364 · doi:10.1007/s00365-014-9234-6
Abstract
It is proved a -estimation for quadratic partial sums of two-dimensional Fourier series from which it is derived an almost everywhere exponential summability of quadratic partial sums of double Fourier series.