more Isabelle symbol definitions for Z Notation, based on https://github.com/isabelle-utp/Z_Toolkit 998c9f7880d3 by Simon Foster;
NB: no bold version of 0x2900 due to fontforge crash "Internal Error: Some fragments did not join";
(* Title: HOL/Library/Realizers.thy
Author: Stefan Berghofer and Markus Wenzel, TU Muenchen
*)
section \<open>Program extraction from proofs involving datatypes and inductive predicates\<close>
theory Realizers
imports Main
begin
ML_file \<open>~~/src/HOL/Tools/datatype_realizer.ML\<close>
ML_file \<open>~~/src/HOL/Tools/inductive_realizer.ML\<close>
end