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+(* -*- coding:utf-8 -*- *)
+(************************************************************************)
+(* v * The Coq Proof Assistant / The Coq Development Team *)
+(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *)
+(* \VV/ **************************************************************)
+(* // * This file is distributed under the terms of the *)
+(* * GNU Lesser General Public License Version 2.1 *)
+(************************************************************************)
+
+(* Logic *)
+Notation "∀ x .. y , P" := (forall x, .. (forall y, P) ..)
+ (at level 200, x binder, y binder, right associativity) : type_scope.
+Notation "∃ x .. y , P" := (exists x, .. (exists y, P) ..)
+ (at level 200, x binder, y binder, right associativity) : type_scope.
+
+Notation "x ∨ y" := (x \/ y) (at level 85, right associativity) : type_scope.
+Notation "x ∧ y" := (x /\ y) (at level 80, right associativity) : type_scope.
+Notation "x → y" := (x -> y) (at level 90, right associativity): type_scope.
+Notation "x ↔ y" := (x <-> y) (at level 95, no associativity): type_scope.
+Notation "¬ x" := (~x) (at level 75, right associativity) : type_scope.
+Notation "x ≠ y" := (x <> y) (at level 70) : type_scope.
+
+(* Abstraction *)
+Notation "'λ' x .. y , t" := (fun x => .. (fun y => t) ..)
+ (at level 200, x binder, y binder, right associativity).