TY - JOUR AU - Antoni Zygmund TI - Two notes on the summability of infinite series JO - Colloquium Mathematicum PY - 1947 SP - 225 EP - 229 VL - 1 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-1-3-225-229/ DO - 10.4064/cm-1-3-225-229 LA - en ID - 10_4064_cm_1_3_225_229 ER -