16 lines
385 B
Coq
16 lines
385 B
Coq
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Inductive term: Type :=
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| Var: nat -> term
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| Abs: term -> term
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| App: term -> term -> term.
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Notation "'λ' body" := (Abs body) (at level 60, right associativity).
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Notation "'❨' t1 t2 '❩'" := (App t1 t2) (at level 50).
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Notation "'`' varidx " := (Var varidx) (at level 40).
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Check λ`0.
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Check λ❨`0 `0❩.
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Check ❨λ❨`0 `0❩ λ❨`0 `0❩❩.
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Require Import List.
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Search In.
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