# HG changeset patch # User nipkow # Date 1604844170 -3600 # Node ID 49057e93f56762e06b8b760ed9b0af655c606f5b # Parent e1d04777d8b68add55628e33d8150118d2aac09f tuned diff -r e1d04777d8b6 -r 49057e93f567 src/HOL/Data_Structures/Sorting.thy --- a/src/HOL/Data_Structures/Sorting.thy Sat Nov 07 23:20:43 2020 +0000 +++ b/src/HOL/Data_Structures/Sorting.thy Sun Nov 08 15:02:50 2020 +0100 @@ -38,7 +38,7 @@ apply (simp add: mset_insort) done -lemma set_insort: "set (insort x xs) = insert x (set xs)" +lemma set_insort: "set (insort x xs) = {x} \ set xs" by(simp add: mset_insort flip: set_mset_mset) lemma sorted_insort: "sorted (insort a xs) = sorted xs"