› added 2 years ago

79

TIL there’s a math book called Generatingfunctionology (yes, that’s one word).

Read more www2.math.upenn.edu

via reddit.com

P1JoL TIL about Subutai also known as 'The Demon Dog of war' A Monggol general and the primary military strategist of Genghis Khan, regarded by many as the single greatest military commander in history, instrumental in the conquests of Genghis and Ögedei Khan.
nevDd We’ve seen people on skateboards and motorcycles loop the loop many times. Damian Walter is the first human to do it on foot. To run it without falling, you need to reach the right speed; then, centrifugal forces will keep you locked on the track. Note how his shoulder line stays dead centre of the loop. For this particular one, Damian needed to accelerate up to 8.65 mph in the highest point to be able to gain enough inertia as to rotate his body and legs around his head fast enough, so when gravity finally wins, he’s already feet down on the track.
awG5Z TIL about Ushkuyniks , Russian pirates who imitated Vikings & terrorised rivers of Novgorod.
jBVj TIL that Pizza Hut’s Stuffed Crust Pizza, McDonald’s McGriddles and Dollar Menu, and the Smashburger restaurant chain were all developed by the same guy
mxBvR TIL That when astronomers discovered a rare type of comet doesn't produce a "tail" when close to the sun they named them "Manx Comets", after the Manx breed of tailless cats