TY - JOUR AU - L. L. Tsinman TI - On the role of the principle of induction in a formal arithmetic system JO - Sbornik. Mathematics PY - 1968 SP - 65 EP - 95 VL - 6 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1968_6_1_a4/ LA - en ID - SM_1968_6_1_a4 ER -