TY - JOUR AU - Dominic J. D. Hughes TI - Proofs without syntax JO - Annals of mathematics PY - 2006 SP - 1065 EP - 1076 VL - 164 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4007/annals.2006.164.1065/ DO - 10.4007/annals.2006.164.1065 LA - en ID - 10_4007_annals_2006_164_1065 ER -