| changeset 54631 | da88a625cce1 |
| parent 54588 | 42b9baf50f8f |
| child 54632 | 7a14f831d02d |
--- a/NEWS Thu Dec 05 09:20:32 2013 +0100 +++ b/NEWS Thu Dec 05 09:23:59 2013 +0100 @@ -79,6 +79,10 @@ * Introduce bdd_above and bdd_below in Conditionally_Complete_Lattices, use them instead of explicitly stating boundedness of sets. +* ccpo.admissible quantifies only over non-empty chains to allow +more syntax-directed proof rules; the case of the empty chain +shows up as additional case in fixpoint induction proofs. +INCOMPATIBILITY *** ML ***