更新时间:2023-11-29 20:13:34
pose proof (h h2) as h3.
引入 h3:B
作为新的假设,
specialize (h h2).
修改 h:A-> B
转换为 h:B
-如果您不需要 h
,此功能将非常有用>之后,对称地,
modifies h : A -> B
into h : B
-- this can be useful if you won't need h
later, and symmetrically,
apply h in h2.
将 h2:A
转换为 h2:B
。
另一种(不是很方便)的方法是
Another (not very convenient) way would be to
assert B as h3 by exact (h h2).
这就是姿势证明
的等效形式
此外,在如下所示的简单情况下,您也可以在不引入新假设的情况下解决目标:
Also, in a simple case like the following, you can solve your goal without introducing a new hypothesis:
Goal forall (A B : Prop), (A -> B) -> A -> B.
intros A B h h2.
apply (h h2).
Qed.