Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20060424 13:04:00
Pi, the long way aroundThe blogger "ridiculous fish" has implemented a very novel approach to cutting out comment spam (and much better than the "distorted image" method). I thought it was both interesting and cool. Have a look: Last edited by ryos (20060424 13:04:19) El que pega primero pega dos veces. #2 20060424 19:33:02
Re: Pi, the long way aroundSo far they have: "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #3 20060424 23:08:56
Re: Pi, the long way aroundPretty interesting. IPBLE: Increasing Performance By Lowering Expectations. #4 20060424 23:35:19
Re: Pi, the long way aroundHere's a Mathematica fuction which makes n tests with numbers less than b: Code:PPr[n_, b_] := ( c = 0; Do[If[GCD[Random[Integer, {1, b}], Random[Integer, {1, b}]] == 1, c++;], {i, 1, n}]; c/n )
As you see, this method is unusable, because for approximately 3 digits of 6/pi^2 you need >10^6 tests. IPBLE: Increasing Performance By Lowering Expectations. #5 20060425 00:19:38
Re: Pi, the long way aroundwell, one million comments, that's not that much #6 20060425 10:04:09
Re: Pi, the long way aroundGood work, krassi! "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman 