- #1
alvielwj
- 20
- 0
I am studying Heine-Borel theorem.
I finally get the sense of this theorem after i read a lots posts here.
But I found a question posted by Rach3
why for S={1,1/2,1/3……} there is no subcollection of it is a cover of S
but every open cover of T={0,1,1/2,1/3……} has a finite subcover?
I finally get the sense of this theorem after i read a lots posts here.
But I found a question posted by Rach3
why for S={1,1/2,1/3……} there is no subcollection of it is a cover of S
but every open cover of T={0,1,1/2,1/3……} has a finite subcover?