src/FOL/IFOL.ML
1994-12-23 lcp 1994-12-23 Added Krzysztof's theorem disj_imp_disj
1994-12-16 lcp 1994-12-16 conj_cong2: new congruence rule
1994-12-13 clasohm 1994-12-13 removed FOL_Lemmas and IFOL_Lemmas; added qed_goal
1993-09-24 lcp 1993-09-24 Added ex_ex1I: new introduction rule for the EX! quantifier.
1993-09-16 clasohm 1993-09-16 Initial revision