You are currently browsing the tag archive for the ‘countable’ tag.

How to measure the size of a set? It is easy for sets with finite elements, but how about sets with infinite elements? We have used ‘infinite’ several times in previous posts, as we all have a rough idea about what infinity means. In this post, we will give strict definition and other discussions concerning finite and infinite sets. Notice that \mathbb{N} has already been assumed.

1. Finite set

Read the rest of this entry »

Enter your email address to subscribe to this blog and receive notifications of new posts by email.
填写您的email便可以订阅此博客。订阅后,如有任何博文更新,您将会收到email通知。

Join 6 other followers

Categories

Archives

Blog Stats

  • 1,211 hits