Saturday, July 23, 2016

James Clewett: 13,983,816 and the Lottery




  • National Lottery
  • Lottery mathematics

Sean Murray: No Man's Sky: 18 Minute Gameplay Demo

Sean Murray

No Man’s Sky: EXPLORE Trailer

John Hunton: 5 and Penrose Tiling

John Hunton



  • We didn't see it because we didn't look for it.
  • One of the ways in which, one of the most common ways in which patterns like this are found are by taking regular pattern, but in a much higher dimensional space, and then cutting through that space, at an irrational angle. And the irrationality of the way you've cut it will mean that you'll never get complete repetition.
  • Dan Schlectman (ダニエル・シェヒトマン)
  • Quasicrystal (準結晶)

Philip Moriarty: Sounds of Pi: Six Nines In Pi (ファインマン・ポイント)

Tuesday, July 19, 2016

Edmund Copeland & Gregory Galperin: Pi and Bouncing Balls: Galperin’s Billiard Method of Computing Pi

Gregory Galperin
Edmund Copeland




N Big Ball is Collisions required to turn around
0 16 times bigger 3
1 1600 times bigger 31
2 160,000 times bigger 314
3 16,000,000 times bigger 3,141
4 1,600,000,000 times bigger 31,415
5 160,000,000,000 times bigger 314,159
6 16,000,000,000,000 times bigger 3,141,592
  • M = 16 * 100^n * m
  • Galperin’s billiard method of computing pi

Masayoshi Son (孫正義): Press Conference: ARM to be acquired by SoftBank

Masayoshi Son



  • Earnings before interest and taxes (EBIT)
  • Earnings before interest, taxes, depreciation, and amortization (EBITDA)
  • Free cash flow
  • Net debt zero
  • ARM Holdings (ARMホールディングス)
  • ARM architecture (ARMアーキテクチャ)
  • United Kingdom withdrawal from the European Union (欧州連合からのイギリス脱退問題)