%0 Journal Article %A Dominic J. D. Hughes %T Proofs without syntax %J Annals of mathematics %D 2006 %P 1065-1076 %V 164 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4007/annals.2006.164.1065/ %R 10.4007/annals.2006.164.1065 %G en %F 10_4007_annals_2006_164_1065