3 ms·
Can you explain what these A₀, A₁, A₂, ... are, and how their supremum is a finite number?
by tromp 3y ago
Can you explain what these A₀, A₁, A₂, ... are, and how their supremum is a finite number?
- tzs 3y agoOh, I didn't realize we were only doing finite numbers. I had thought we just needed numbers that. The A's are the aleph numbers, just using A instead of 𐡀 because I don't know how to put a subscript on the right side of an 𐡀. They are the cardinalities of well-ordered infinite sets. Aleph-0 is the cardinality of the natural numbers, aleph-1 is the cardinality of the smallest infinite set that is larger than the natural numbers, and it goes on from there.
- tromp 3y agoYeah; I was doing finite numbers. Sorry if that wasn't clear.