Wikipedia:Reference desk/Archives/Mathematics/July 2019

= July 2 = Reference_desk/Archives/Mathematics/2019 July 2


 * 1) Why not the Platonic Solid dipyraminds?

= July 6 = Reference_desk/Archives/Mathematics/2019 July 6


 * 1) Describe the Kleisli category of the power-set monad as the category of "sets and relations"

= July 13 = Reference_desk/Archives/Mathematics/2019 July 13


 * 1) Wikipedia stats question

= July 22 = Reference_desk/Archives/Mathematics/2019 July 22


 * 1) Geometric significance of cross-ratio values

= July 23 = Reference_desk/Archives/Mathematics/2019 July 23


 * 1) Perfect numbers one less than primes

= July 26 = Reference_desk/Archives/Mathematics/2019 July 26


 * 1) Name for specific Octagrams?
 * 2) n-body problem

= July 29 = Reference_desk/Archives/Mathematics/2019 July 29


 * 1) Shouldn't the sin of 90 degrees be undefined?
 * 2) Gravity in a 4D universe