Restricted summability of the multi-dimensional Cesàro means of Walsh-Kaczmarz-Fourier series

Károly Nagy, Mohamed Salim

The properties of the maximal operator of the $(C,\alpha )$-means ($\alpha =({\alpha }_1,\dots ,{\alpha }_d)$) of the multi-dimensional Walsh-Kaczmarz-Fourier series are discussed, where the set of indices is…