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2019-10-12, 23:32   #2
Dr Sardonicus

Feb 2017
Nowhere

10110100110002 Posts

Quote:
 Originally Posted by axn Apologies if someone has already posted this elsewhere.
Nope, but somebody posted on it a day after you did, here.

Nice lead-in to Dirichlet's theorem on primes in arithmetic progressions.

I find it bemusing that everything in the polar graphs lies on a single spiral

$r\;=\;\theta$

but a swarm of spirals seems to appear. Ex uno plura!