Nominal/Ex/SingleLet.thy
author Cezary Kaliszyk <kaliszyk@in.tum.de>
Mon, 17 May 2010 16:29:33 +0200
changeset 2145 f89773ab0685
parent 2120 2786ff1df475
child 2146 a2f70c09e77d
permissions -rw-r--r--
Ex4 does work, and I don't see the difference between the alphas.
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theory SingleLet
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imports "../NewParser"
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begin
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atom_decl name
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nominal_datatype trm =
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  Var "name"
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| App "trm" "trm"
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| Lam x::"name" t::"trm"  bind_set x in t
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| Let a::"assg" t::"trm"  bind_set "bn a" in t
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and assg =
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  As "name" "trm"
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binder
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  bn::"assg \<Rightarrow> atom set"
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where
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  "bn (As x t) = {atom x}"
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ML {* Inductive.the_inductive *}
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thm trm_assg.fv
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thm trm_assg.supp
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thm trm_assg.eq_iff
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thm trm_assg.bn
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thm trm_assg.perm
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thm trm_assg.induct
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thm trm_assg.inducts
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thm trm_assg.distinct
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ML {* Sign.of_sort @{theory} (@{typ trm}, @{sort fs}) *}
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thm trm_assg.fv[simplified trm_assg.supp(1-2)]
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end
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