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6:50 AM
D1, D2, D3, D4
D5, D6, D7, D8
 
 
6 hours later…
1:07 PM
this answer adds nothing that has not been mentioned already in the comments.
 
 
6 hours later…
7:36 PM
 
8:04 PM
Hello. I had my question closed, I've tried to expand at what I was hinting at the first time. Hopefully now it can get reopened.
https://math.stackexchange.com/questions/4508642/definitions-of-relative-countable-compactness
 
 
3 hours later…
11:03 PM
I am not sure how to classify this, but it feels very off-topic to me. Types of mathematical questions?‭ - Noah Justice‭ 2022-08-13 22:58:42Z
 
11:23 PM
I voted to close this question as lacking context, but retracted it when the OP added more detail. However, I then did an Approach0 search to find a duplicate, & almost duplicate, as mentioned in my comment there. Perhaps somebody can now vote to close this as a duplicate?
 

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