diff -r 4074c7d86d44 -r b3d18eb3ac20 NEWS --- a/NEWS Wed Jul 01 19:03:54 1998 +0200 +++ b/NEWS Wed Jul 01 19:11:20 1998 +0200 @@ -46,6 +46,20 @@ *** HOL *** +* Inductive definition package: Mutually recursive definitions such as + + inductive EVEN ODD + intrs + null " 0 : EVEN" + oddI "n : EVEN ==> Suc n : ODD" + evenI "n : ODD ==> Suc n : EVEN" + + are now possible. Theories containing (co)inductive definitions must now + have theory "Inductive" as an ancestor. The new component "elims" of the + structure created by the package contains an elimination rule for each of + the recursive sets. Note that the component "mutual_induct" no longer + exists - the induction rule is always contained in "induct". + * HOL/Real: a construction of the reals using Dedekind cuts * HOL/record: now includes concrete syntax for record terms (still