Can't help but notice that in just one sentence Ulam is giving a great compliment to Erdős and also a nice example of what a countably infinite set means :)
"His peculiarities are so numerous it is impossible to describe them all." — Ulam on Erdős
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Uncountably infinite then? Or like busy beaver numbers big?
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every erdös number maps to a peculiarity?
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Does anyone have any good links re: this?
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