# what do you call a circle with every number around it?

What do you call this Zeno-ish circle? It has every single number around it.

The numbers are placed at $$1/4, 3/8, 7/16, 15/36$$ and so on.

Basically $$2^{n-1}/2^{n+1}$$ for the positives, and $$-2^{-n-1}/2^{-n+1}$$ for the negatives.

• I think you're talking about the projectively extended real line. – Ertxiem Apr 26 at 1:37
• yeah this one's the answer how do i pin it – wonderingaboutthisarray Apr 26 at 2:45
• I'll add as an answer. Did you only wanted to know the name? – Ertxiem Apr 26 at 7:15