this post was submitted on 29 Sep 2023
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[–] [email protected] 4 points 1 year ago* (last edited 1 year ago) (1 children)

i think this means that ∞ + ∞ > ∞

[–] [email protected] 5 points 1 year ago (2 children)

Not quite. It's somewhat annoying to work with infinities, since they're not numbers. Technically speaking, ∞ + ∞ is asking the question: What is the result of adding any two infinite (real) sequences, both of which approaching infinity? My "proof" has shown: the result is greater than any one of the sequences by themselves -> therefore adding both sequences produces a new sequence, which also diverges to infinity. For example:

The series a_n = n diverges to infinity. a_1 = 1, a_2 = 2, a_1000 = 1000.

Therefore, lim(n -> a_n) = ∞

But a_n = 0.5n + 0.5n.

And lim(n -> ∞) 0.5n = ∞

So is lim(n -> ∞) a_n = 2 • lim(n -> ∞) 0.5n = 2 • ∞?

It doesn't make sense to treat this differently than ∞, does it?

[–] [email protected] 3 points 1 year ago (1 children)
[–] [email protected] 2 points 1 year ago

Here is an alternative Piped link(s):

Sounds like the infinite hotel paradox

Piped is a privacy-respecting open-source alternative frontend to YouTube.

I'm open-source; check me out at GitHub.

[–] [email protected] 0 points 1 year ago (1 children)

Wait, isn't there some thought experiment where you can insert infinity into infinity simply by moving infinity over by one infinite times?

I'm too lazy to look it up rn

[–] [email protected] 1 points 1 year ago

Yup, someone else commented it in this thread.

https://sh.itjust.works/comment/3777415