TY - JOUR T1 - Integrability and $L^1$-Convergence of Double Cosine Trigonometric Series AU - J. Kaur & S. S. Bhatia JO - Analysis in Theory and Applications VL - 1 SP - 32 EP - 39 PY - 2011 DA - 2011/01 SN - 27 DO - http://doi.org/10.1007/s10496-011-0032-8 UR - https://global-sci.org/intro/article_detail/ata/4577.html KW - $L^1$-convergence, conjugate Dirichlet kernel. AB -

We study here $L^1$-convergence of new modified double cosine trigonometric sum and obtain a new necessary and sufficient condition for $L^1$-convergence of double cosine trigonometric series. Also, the results obtained by Moricz[1],[2] are particular cases of ours.