Why Nostr? What is Njump?
2024-08-04 15:45:57

npub13c…mkmh9 on Nostr: I wonder what's more common, for people to call a set like {(x,y) ∊ X : 0<d(x,y)<r} ...

I wonder what's more common, for people to call a set like {(x,y) ∊ X : 0<d(x,y)<r} a deleted disk or a punctured disk. (or deleted ball/punctured ball?)

#math
Author Public Key
npub13c97pgmycrwjjdjvg0fvxqr2rraxw4pap9nrtuapgsmsg2se4llqjmkmh9