1.1 --- a/src/Tools/isac/Knowledge/Inverse_Z_Transform.thy	Wed Aug 03 18:17:27 2022 +0200
     1.2 +++ b/src/Tools/isac/Knowledge/Inverse_Z_Transform.thy	Thu Aug 04 12:48:37 2022 +0200
     1.3 @@ -27,7 +27,7 @@
     1.4  
     1.5  ML \<open>
     1.6  val inverse_z = prep_rls'(
     1.7 -  Rule_Def.Repeat {id = "inverse_z", preconds = [], rew_ord = ("dummy_ord",Rewrite_Ord.dummy_ord), 
     1.8 +  Rule_Def.Repeat {id = "inverse_z", preconds = [], rew_ord = ("dummy_ord",Rewrite_Ord.function_empty), 
     1.9  	  erls = Rule_Set.Empty, srls = Rule_Set.Empty, calc = [], errpatts = [],
    1.10  	  rules = 
    1.11  	   [