TY - JOUR AU - Abraham Goetz TI - On the algebraic structure of the process of forming subsequences JO - Colloquium Mathematicum PY - 1972 SP - 313 EP - 322 VL - 26 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-26-1-313-322/ DO - 10.4064/cm-26-1-313-322 LA - en ID - 10_4064_cm_26_1_313_322 ER -