1. Mean bounded variation condition and applications in double trigonometric series

   • Dansheng Yu
   • Ping Zhou
   • Songping Zhou

   OriginalPaper 25 May 2012 Pages: 83 - 104

2. Generalized absolute convergence of single and double Fourier series with respect to multiplicative systems

   • B. I. Golubov
   • S. S. Volosivets

   OriginalPaper 25 May 2012 Pages: 105 - 122

3. On L ¹-convergence of sine series

   • László Leindler

   OriginalPaper 25 May 2012 Pages: 123 - 133

4. Improvement of an extension of a Hölder-type inequality

   • Josip Pečarić
   • Ksenija Smoljak

   OriginalPaper 25 May 2012 Pages: 135 - 146

5. О наилучшем приближении периодических функций тригонометрическими полиномами и точных эначениях поперечников функциональных классов в L ₂

   • М. Ш. Шлбоэов
   • С. В. Влклрчук

   OriginalPaper 25 May 2012 Pages: 147 - 159