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Tutorial/Minimal.thy
author Christian Urban <urbanc@in.tum.de>
Sun, 26 Jun 2011 17:55:22 +0100
changeset 2902 9c3f6a4d95d4
parent 2686 52e1e98edb34
child 3132 87eca760dcba
permissions -rw-r--r--
another change to the fcb2; this is needed in order to get all proofs through in Lambda.thy

theory Minimal
imports "Nominal2"
begin

atom_decl name

nominal_datatype lam =
  Var "name"
| App "lam" "lam"
| Lam x::"name" l::"lam"  bind x in l ("Lam [_]. _" [100, 100] 100)



lemma alpha_test:
  shows "Lam [x]. (Var x) = Lam [y]. (Var y)"
  by (simp add: lam.eq_iff Abs1_eq_iff lam.fresh fresh_at_base)

end
nominal2