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Tutorial/Minimal.thy
author Christian Urban <christian dot urban at kcl dot ac dot uk>
Thu, 29 Nov 2012 21:59:38 +0000
changeset 3204 b69c8660de14
parent 3132 87eca760dcba
child 3235 5ebd327ffb96
permissions -rw-r--r--
fixed problem with not fresh enough permutation name in nominal_primrec

theory Minimal
imports "Nominal2"
begin

atom_decl name

nominal_datatype lam =
  Var "name"
| App "lam" "lam"
| Lam x::"name" l::"lam"  binds 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