Indécidabilité de la théorie des anneaux de séries formelles à plusieurs indéterminées
For finitely axiomatized sequential theories F and reflexive theories R, we give a characterization of the relation ’F interprets R’ in terms of provability of restricted consistency statements on cuts. This characterization is used in a proof that the set of (as well as ) sentences π such that GB interprets ZF+π is -complete.