--- a/Quot/quotient_term.ML	Thu Jan 21 09:55:05 2010 +0100
+++ b/Quot/quotient_term.ML	Thu Jan 21 10:55:09 2010 +0100
@@ -367,6 +367,7 @@
 val mk_ball = Const (@{const_name Ball}, dummyT)
 val mk_bex  = Const (@{const_name Bex}, dummyT)
 val mk_bex1 = Const (@{const_name Bex1}, dummyT)
+val mk_bexeq = Const (@{const_name Bexeq}, dummyT)
 val mk_resp = Const (@{const_name Respects}, dummyT)
 
 (* - applies f to the subterm of an abstraction, 
@@ -466,17 +467,17 @@
          val subtrm = apply_subt (regularize_trm ctxt) (t, t')
        in
          if ty = ty' then Const (@{const_name "Ex1"}, ty) $ subtrm
-         else mk_bex1 $ (mk_resp $ equiv_relation ctxt (qnt_typ ty, qnt_typ ty')) $ subtrm
+         else mk_bexeq $ (equiv_relation ctxt (qnt_typ ty, qnt_typ ty')) $ subtrm
        end
 
-  | (Const (@{const_name "Bex1"}, ty) $ (Const (@{const_name "Respects"}, _) $ resrel) $ t, Const (@{const_name "Ex1"}, ty') $ t') =>
+  | (Const (@{const_name "Bexeq"}, ty) $ resrel $ t, Const (@{const_name "Ex1"}, ty') $ t') =>
        let
          val subtrm = apply_subt (regularize_trm ctxt) (t, t')
          val needrel = Syntax.check_term ctxt (equiv_relation ctxt (qnt_typ ty, qnt_typ ty'))
        in
          if resrel <> needrel
          then term_mismatch "regularize(bex1)" ctxt resrel needrel
-         else mk_bex1 $ (mk_resp $ resrel) $ subtrm
+         else mk_bexeq $ resrel $ subtrm
        end
 
   | (* equalities need to be replaced by appropriate equivalence relations *)