vm.fail
Alpha equivalence checker for arbitrary lambda terms
1type t =
2 | Var of int
3 | Free of string
4 | Lam of t
5 | App of t * t
6
7module SSet : Set.S with type elt = string
8
9exception Unbound_index of int
10
11val free_variables : t -> SSet.t
12val free_variable_list : t -> string list
13val pretty : t -> string
14val shift : int -> int -> t -> t
15val subst : int -> t -> t -> t
16val substitute : int -> t -> t -> t
17val convert_from_named : Named.t -> t
18val convert_to_named : t -> Named.t
19val alpha_equivalent : t -> t -> bool
20val alpha_equivalent_counted : t -> t -> bool * int * int
21val normalise : t -> t
22val normalise_counted : t -> t * int * int
23val well_scoped : int -> t -> bool