| changeset 58372 | bfd497f2f4c2 |
| parent 46512 | 4f9f61f9b535 |
| child 58380 | 14404f6b760c |
--- a/src/HOL/Proofs/Lambda/Commutation.thy Thu Sep 18 16:47:40 2014 +0200 +++ b/src/HOL/Proofs/Lambda/Commutation.thy Thu Sep 18 16:47:40 2014 +0200 @@ -5,7 +5,9 @@ header {* Abstract commutation and confluence notions *} -theory Commutation imports Main begin +theory Commutation +imports Old_Datatype +begin declare [[syntax_ambiguity_warning = false]]