replaced apply-style proof for instance Multiset :: plus_ac0 by recommended Isar proof style
(* Title: HOL/PreList.thy
ID: $Id$
Author: Tobias Nipkow and Markus Wenzel
Copyright 2000 TU Muenchen
*)
header{*A Basis for Building the Theory of Lists*}
theory PreList =
Wellfounded_Relations + Presburger + Recdef + Relation_Power + Parity:
text {*
Is defined separately to serve as a basis for theory ToyList in the
documentation. *}
lemmas wf_induct_rule = wf_induct [rule_format, case_names less, induct set: wf]
-- {* belongs to theory @{text Wellfounded_Recursion} *}
end