Section GLOBALENV_PRINCIPLES.
Variable P: t -> Prop.
Remark in_norepet_unique:
forall id g (gl: list (ident * globdef F V)),
In (id, g) gl -> list_norepet (map fst gl) ->
exists gl1 gl2, gl = gl1 ++ (id, g) :: gl2 /\ ~In id (map fst gl2).
End GLOBALENV_PRINCIPLES.
(** ** Properties of the operations over global environments *)

Theorem global_addresses_distinct:
forall ge id1 id2 b1 b2,
id1 <> id2 ->
find_symbol ge id1 = Some b1 ->
find_symbol ge id2 = Some b2 ->
b1 <> b2.