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MacDawg

Moderator emeritus
Original poster
Mar 20, 2004
19,823
4,504
"Between the Hedges"
Get your order in now to be ready...

pi.jpg
 

Doctor Q

Administrator
Staff member
Sep 19, 2002
40,077
8,335
Los Angeles
Pi Day definitely deserves a little more hoopla this year. But if you forget to celebrate, you'll simply have to wait for 3.14 in the year 2115!
 

Berlepsch

macrumors 6502
Oct 22, 2007
303
48
You Americans and your crazy date format.
Proper Pi day is of course 31.4.15!

Oh, wait...
 

Doctor Q

Administrator
Staff member
Sep 19, 2002
40,077
8,335
Los Angeles
I have a friend who took his big annual vacation (always to the same resort destination) on 6/6/06, 7/7/07, 8/8/08, 9/9/09, 10/10/10, 11/11/11, and then 12/12/12. Actually, he may have started the pattern earlier, in 2001 to 2005, but I forget. Once the months ran out at 12, he gave up the pattern, which was a bit of a relief because he could start choosing the season when he wanted to go on vacation, rather than having the date choose it for him!
 

Tilpots

macrumors 601
Apr 19, 2006
4,195
71
Carolina Beach, NC
I have a friend who took his big annual vacation (always to the same resort destination) on 6/6/06, 7/7/07, 8/8/08, 9/9/09, 10/10/10, 11/11/11, and then 12/12/12. Actually, he may have started the pattern earlier, in 2001 to 2005, but I forget. Once the months ran out at 12, he gave up the pattern, which was a bit of a relief because he could start choosing the season when he wanted to go on vacation, rather than having the date choose it for him!

What did his therapist say about it?
 

FieldingMellish

Suspended
Jun 20, 2010
2,440
3,108
I like that one also. Graphics are conspicuous at distance. But it could spell trouble if I get tempted to rob a convenience store. :)
 

maflynn

macrumors Haswell
May 3, 2009
73,682
43,740
Well Happy Pi day.

I'm not going to be around at 9:26:53, so I'll give my well wishes a bit early :D

I have my t-shirt ready
piday.jpg
 

Doctor Q

Administrator
Staff member
Sep 19, 2002
40,077
8,335
Los Angeles
I visited a math classroom yesterday where students were supposedly having pi-related math lessons in honor of today's event. However, a mom had brought in a bunch of pies and everyone was having a great time eating them. I snuck a bite too. So forget the math, just enjoy the event!

I just gave my wife a big hug and kiss for Pi Minute (3 14 15 9:26:53). She didn't mind; any excuse is fine. And the kids are used to me being a math geek so they put up with my silliness.
 

Doctor Q

Administrator
Staff member
Sep 19, 2002
40,077
8,335
Los Angeles
I would dispute one claim in that article.

They say:
If pi were truly random, that would mean that the number sequence in pi would never repeat itself, and -- because pi is infinite -- it would contain all patterns in existence. Any word that you can think of, when encoded in numbers, would show up in pi, says Kryzwinski. So would the entire works of Shakespeare, all possible misprints and permutations of Shakespeare, and even, if you were patient enough, pi itself. As Cornell mathematician Steven Strogatz writes for The New Yorker, pi is so special in part because it "puts infinity within reach."​
I added the bold.

If the digits of pi were contained somewhere within pi, starting at the N+1st digit, for some positive integer N, then consider the sequence consisting of the first N digits. That sequence would repeat itself starting at digit N+1, i.e., in the range {N+1,2N}, which means that for every digit in position P the same digit would occur at position P+N. For example, the digits in the range {1,N} would also occur at {N+1,2N}, {2N+1,3N}, {3N+1,4N}, and in fact the range {mN-N-1,mN) for every positive integer m.

Therefore, the first N digits of pi would repeat, making it a repeating decimal whose value would equal the first N digits of pi, without the decimal point, divided by 10^N-1. That would make pi rational. Since pi is irrational, we've reached a contradiction, so the original statement must be false.
 
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