This is how Cantor proved rational #'s the lowest transfinite ordinal # (aleph null, same as set of all whole #'s, integers, etc.), right?
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The proper hashtag is
#proofinatweet. Here's a collection:https://twitter.com/panlepan/status/861496373761507328 …
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Proof in a tweet is easy when you use photos. You could prove your Last Thm in a tweet if you're using photos.
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I remember a maths teacher showing us this in a demo class for an institute. Left us in awe. No doubt, I joined those classes.
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In what way is this not a function?
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The number of rational numbers is then \sum n, where n ranges in the positive integer numbers.
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or 1/1 1/2 2/2 2/1 3/1 3/2 3/3 2/3 1/3 1/4 ... all single-step rook (wazir) moves.
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