src/ZF/AC.thy
1998-12-28 paulson 1998-12-28 new inductive, datatype and primrec packages, etc.
1997-01-03 paulson 1997-01-03 Implicit simpsets and clasets for FOL and ZF
1996-02-06 clasohm 1996-02-06 expanded tabs
1994-07-26 lcp 1994-07-26 Axiom of choice, cardinality results, etc.