Is open?%20open__files/image001.png){kind=small}
Wednesday, 20 March 2019
10:48 AM
Discovery
%20open__files/image002.png){kind=small}
%20open__files/image003.png){kind=small}
Answer
The set is not open%20open__files/image004.png){kind=small}
Proof
We are proving %20open__files/image005.png){kind=small}
Choose , let %20open__files/image006.png){kind=small}
Choose %20open__files/image007.png){kind=small}
%20open__files/image008.png){kind=small}
But so %20open__files/image009.png){kind=small}
Therefore is not open%20open__files/image010.png){kind=small}
Is open?
Wednesday, 20 March 2019
10:48 AM
Discovery
Answer
The set is not open
Proof
We are proving
Choose , let
Choose
But so
Therefore is not open
Created with Microsoft OneNote 2016.