Syntax and Notations - coq/coq GitHub Wiki
(Part of the Coq FAQ)
You can define your own notation for forall:
Notation "fa x : t, P" := (forall x:t, P) (at level 200, x ident).or if your are using CoqIde you can define a pretty symbol for forall and an input method (see this section).
You can use for instance:
Require Import Coq.Reals.Rdefinitions.
Notation "x ^ 2" := (Rmult x x) (at level 20).Note that you can not use:
Notation "x2" := (Rmult x x) (at level 20).
because “2” is an iso-latin character. If you really want this kind of notation you should use UTF-8.
Because we rely on Camlp4 for syntactical analysis and Camlp4 does not really implement no associativity. By default, non-associative operators are defined as right-associative.
You can do “Print Grammar constr”, and decode the output from Camlp4, good luck!
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