begin
:: deftheorem defines seq CALCUL_2:def 1 :
theorem Th1:
theorem Th2:
theorem Th3:
theorem Th4:
theorem Th5:
theorem Th6:
theorem Th7:
theorem
theorem
theorem Th10:
theorem Th11:
theorem Th12:
theorem Th13:
theorem Th14:
theorem Th15:
theorem Th16:
theorem Th17:
theorem Th18:
:: deftheorem defines Per CALCUL_2:def 2 :
theorem Th19:
theorem Th20:
begin
:: deftheorem Def3 defines Begin CALCUL_2:def 3 :
:: deftheorem Def4 defines Impl CALCUL_2:def 4 :
theorem Th21:
theorem Th22:
theorem Th23:
theorem Th24:
theorem Th25:
theorem Th26:
theorem Th27:
theorem Th28:
theorem Th29:
theorem
begin
theorem Th31:
theorem