Re: Pi: Less Random Than We Thought

2005-05-08 Thread Major Variola (ret)
At 03:55 PM 5/6/05 -0400, Tyler Durden wrote: >Yes, but only provided the universe lasts long enough for those digits to be >computed! >-TD Actually, a few years ago someone discovered an algorithm for the Nth (hex) digit of Pi which doesn't require computing all the previous digits. Mind blowing

Re: Pi: Less Random Than We Thought

2005-05-07 Thread Bill Stewart
http://cypherpunks.venona.com/date/1993/05/msg00213.html Back in the old days, Tim May would occasionally talk about the Kolmogorov-Chaitin theories about randomness - Kolmogorov complexity gives you a lot of deep explanations about this sort of problem. Alas, I never actually *read* those pape

Re: Pi: Less Random Than We Thought

2005-05-06 Thread Tyler Durden
Yes, but only provided the universe lasts long enough for those digits to be computed! -TD From: John Kelsey <[EMAIL PROTECTED]> To: Sarad AV <[EMAIL PROTECTED]>, [EMAIL PROTECTED] CC: [EMAIL PROTECTED] Subject: Re: Pi: Less Random Than We Thought Date: Fri, 6 May 2005 09:42:09 -040

Re: Pi: Less Random Than We Thought

2005-05-06 Thread John Kelsey
>From: Sarad AV <[EMAIL PROTECTED]> >Sent: May 5, 2005 8:43 AM >To: [EMAIL PROTECTED] >Cc: [EMAIL PROTECTED] >Subject: Re: Pi: Less Random Than We Thought Well, if it were generated by a random process, we'd expect to see every n-bit substring in there somewhere,

Re: Pi: Less Random Than We Thought

2005-05-06 Thread Sarad AV
hi, --- Gil Hamilton <[EMAIL PROTECTED]> wrote: > For example, is this sequence > of bits random: > 01100100010? How about this one: 00? From > a true random number > generator, both are completely possible and equally > valid. Random as in the sense guessable and thus posing a problem

Re: Pi: Less Random Than We Thought

2005-05-06 Thread Sarad AV
--- Tyler Durden <[EMAIL PROTECTED]> wrote: > > Let us remember, of course, that the digits of "pi" > are not random > whatsoever: they are the digits of pi! "Random is in > the eye of the > beholder." > -TD Exactly. What an algorithm gives out is always deterministic. We try to see if there

Re: Pi: Less Random Than We Thought

2005-05-05 Thread Tyler Durden
e beholder." I was hoping Cordian would grumpily reply...he's a number theorist or something. -TD From: Sarad AV <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] CC: [EMAIL PROTECTED] Subject: Re: Pi: Less Random Than We Thought Date: Thu, 5 May 2005 05:43:35 -0700 (PDT) hi, If you rem

Re: Pi: Less Random Than We Thought

2005-05-05 Thread Gil Hamilton
Sarad writes: If you remember D.E Knuth's book on Semi-Numerical Algorithms he shows some annoying subsequences of pi in it which are far from random. I don't have Knuth's book handy to look at, but it's not really correct to speak of a particular sequence or subsequence of digits as being random o

Re: Pi: Less Random Than We Thought

2005-05-05 Thread Sarad AV
hi, If you remember D.E Knuth's book on Semi-Numerical Algorithms he shows some annoying subsequences of pi in it which are far from random. Sarad. --- cypherpunk <[EMAIL PROTECTED]> wrote: > This doesn't really make sense. Either the digits > are random or they > are not. You can't be a littl

Re: Pi: Less Random Than We Thought

2005-05-04 Thread cypherpunk
>[1]Autoversicherung writes "Physicists including Purdue's Ephraim >Fischbach have completed a study [2]comparing the 'randomness' in pi >to that produced by 30 software random-number generators and one >chaos-generating physical machine. After conducting several tests, >they ha

Re: Pi

2001-08-03 Thread Eric Cordian
Phillip H. Zakas wrote: > this is truly interesting...do you have a link to the original 1996 > paper? do you know if anyone has incorporated this into a program? David Bailey has a brief explanation of the Pi digit algorithm on his Web page at NERSC... http://hpcf.nersc.gov/~dhbailey/pi-alg

Re: Pi

2001-08-03 Thread Steve Schear
At 11:34 AM 8/2/2001 -0700, Eric Cordian wrote: >Interesting article recently posted on the Nature Web site about the >normality of Pi. > >http://www.nature.com/nsu/010802/010802-9.html > >"David Bailey of Lawrence Berkeley National Laboratory in California and > Richard Crandall of Reed College

RE: Pi

2001-08-02 Thread Phillip H. Zakas
this is truly interesting...do you have a link to the original 1996 paper? do you know if anyone has incorporated this into a program? phillip > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of Eric Cordian > Sent: Thursday, August 02, 2001 2:35 PM > T