Commit bc7d4ca9 authored by Robbert Krebbers's avatar Robbert Krebbers

Notations for X ⊆ Y ⊆ Z.

parent 33f0447a
......@@ -637,6 +637,11 @@ Notation "(⊄)" := (λ X Y, X ⊄ Y) (only parsing) : C_scope.
Notation "( X ⊄ )" := (λ Y, X Y) (only parsing) : C_scope.
Notation "( ⊄ X )" := (λ Y, Y X) (only parsing) : C_scope.
Notation "X ⊆ Y ⊆ Z" := (X Y Y Z) (at level 70, Y at next level) : C_scope.
Notation "X ⊆ Y ⊂ Z" := (X Y Y Z) (at level 70, Y at next level) : C_scope.
Notation "X ⊂ Y ⊆ Z" := (X Y Y Z) (at level 70, Y at next level) : C_scope.
Notation "X ⊂ Y ⊂ Z" := (X Y Y Z) (at level 70, Y at next level) : C_scope.
(** The class [Lexico A] is used for the lexicographic order on [A]. This order
is used to create finite maps, finite sets, etc, and is typically different from
the order [(⊆)]. *)
......
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