blob: 962dada35a208d863aa49666ae1277a377100e6c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
Require Import Arith Omega.
Lemma test : forall p:nat, p<>0 -> p-1+1=p.
Proof.
intros; omega.
Qed.
(** Test of new syntax for rewrite : ! ? and so on... *)
Lemma but : forall a b c, a<>0 -> b<>0 -> c<>0 ->
(a-1+1)+(b-1+1)+(c-1+1)=a+b+c.
Proof.
intros.
rewrite test.
Undo.
rewrite test,test.
Undo.
rewrite 2 test. (* or rewrite 2test or rewrite 2!test *)
Undo.
rewrite 2!test,2?test.
Undo.
(*rewrite 4!test. --> error *)
rewrite 3!test.
Undo.
rewrite <- 3?test.
Undo.
(*rewrite <-?test. --> loops*)
rewrite !test by auto.
reflexivity.
Qed.
|
