Math Help Forum

Math Help Forum Feed Site Feed

Go Back   Math Help Forum > Math Help Forum Lounge > Philosophy of Mathematics
Closed Thread
 
Thread Tools Display Modes
  #11  
Old 11-12-2008, 01:48 PM
Junior Member
 
Join Date: Nov 2008
Posts: 6
Country:
Thanks: 0
Thanked 0 Times in 0 Posts
dougbennion is on a distinguished road
Default

Quote:
Originally Posted by CaptainBlack View Post
No, nobody said any such thing is not periodic as then it could not be normal.

CB
So if it is normal, then you can find some initial two sequences such that it is written (NN ...). But doesn't that ultimately lead to the limits of which is the periodic construction (ppppppppppp ... endlessly), so it cannot be normal, so there is a contradiction or something ...

Sorry I'm really floundering away here.
Advertisement
 
  #12  
Old 11-12-2008, 02:03 PM
Junior Member
 
Join Date: Nov 2008
Posts: 6
Country:
Thanks: 0
Thanked 0 Times in 0 Posts
dougbennion is on a distinguished road
Default

Quote:
Originally Posted by dougbennion View Post
So if it is normal, then you can find some initial two sequences such that it is written (NN ...). But doesn't that ultimately lead to the limits of which is the periodic construction (ppppppppppp ... endlessly), so it cannot be normal, so there is a contradiction or something ...

Sorry I'm really floundering away here.
I suppose those p sequences approach infinity themselves .. and I'm supposing the definition of 'periodic' would assume finite sequences, so probably there isn't a contradiction.
  #13  
Old 11-13-2008, 12:34 PM
Junior Member
 
Join Date: Nov 2008
Posts: 6
Country:
Thanks: 0
Thanked 0 Times in 0 Posts
dougbennion is on a distinguished road
Default

Quote:
Originally Posted by dougbennion View Post
I suppose those p sequences approach infinity themselves .. and I'm supposing the definition of 'periodic' would assume finite sequences, so probably there isn't a contradiction.
Ahhh the proper mathematical term came to me. So if you assume pi = normal, then derive that it can be expressed as pi = pppppppppp ... which implies it is periodic (with extremely long p), then that is reductio ad absurdum hence pi is not normal.

I'll leave now.
  #14  
Old 11-15-2008, 04:19 PM
Super Member
 
Join Date: Apr 2005
Posts: 435
Thanks: 3
Thanked 166 Times in 155 Posts
HallsofIvy has a spectacular aura aboutHallsofIvy has a spectacular aura about
Default

Quote:
Originally Posted by dougbennion View Post
Hey thanks for your comments.

So if normal, then pi can ultimately be expressed as a repeating chain (pppppppp ... ) endlessly, analogous to a repeating decimal, so all that is left is to find the integrand and divisor that generates it ... some infinities X/Y = pi Similarly with any other irrational, but with different X and Y and I'm in way too deep to understand what I'm saying ....
That's pretty much the exact opposite of "normal" number. Essentially saying that a number is "normal" means that its digits are "random". (I say "essentially" because it is so hard to define "random" digits.)
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off
Forum Jump


All times are GMT -7. The time now is 03:48 PM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.2.0 ©2008, Crawlability, Inc.
©2005 - 2008 Math Help Forum


Math Help Forum is a community of maths forums with an emphasis on maths help in all levels of mathematics.
Register to post your math questions or just hang out and try some of our math games or visit the arcade.