Pi just got a little bit bigger

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Message 961172 - Posted: 6 Jan 2010, 10:00:32 UTC

According to a BBC news report, Pi has now been calculated to 2.7 trillion digits, 123 billion digits larger that last record.

http://news.bbc.co.uk/1/hi/technology/8442255.stm
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Message 961179 - Posted: 6 Jan 2010, 11:36:50 UTC

That's a lot of pi.

Myself, I like pumpkin pie.
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Message 961197 - Posted: 6 Jan 2010, 14:00:04 UTC

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Message 961202 - Posted: 6 Jan 2010, 14:21:08 UTC - in response to Message 961197.  

Reuben Gathright wrote:
Wait... I thought they solved Pi a few years ago.

There's a solution?
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Message 961218 - Posted: 6 Jan 2010, 15:29:23 UTC

The only remaining question about pi is whether to cut it into 6 pieces or 8 pieces.
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Message 961237 - Posted: 6 Jan 2010, 17:20:50 UTC - in response to Message 961179.  

That's a lot of pi.

Myself, I like pumpkin pie.

I like pumpkin too, But Apple is My favorite, My nephew likes Cherry a lot, Me I like Cherry also, But not as much as Apple. :D

And yeah that's a BIG Pi. :)
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Message 961257 - Posted: 6 Jan 2010, 18:52:33 UTC - in response to Message 961197.  

Pi is an irrational number. It cannot be resolved, it is endless and non-repeating. Other irrational numbers are, for example, sqrt(2), e, the square root of any prime number. Irrational means it cannot be expressed as a ratio of two numbers.
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Message 961269 - Posted: 6 Jan 2010, 19:18:15 UTC

I think the ancient Greeks "solved" pi many moons ago. It is exactly the ratio of the circumference of a perfect circle to its diameter. Problems start when we try to express that "exact solution" as a numerical value.

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Message 961275 - Posted: 6 Jan 2010, 19:44:23 UTC - in response to Message 961257.  
Last modified: 6 Jan 2010, 19:44:56 UTC

Pi is an irrational number. It cannot be resolved, it is endless and non-repeating. Other irrational numbers are, for example, sqrt(2), e, the square root of any prime number. Irrational means it cannot be expressed as a ratio of two numbers.


No...Pi is fine. It is the people that are irrational
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Message 961276 - Posted: 6 Jan 2010, 19:45:19 UTC
Last modified: 6 Jan 2010, 19:45:54 UTC

Hmmm... I wonder if the (calculated) length of Pi obeys Moore's law?

EDIT: And by the way, I can't stand pumpkins... ;)
- Luke.
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Message 961278 - Posted: 6 Jan 2010, 20:00:43 UTC

Seems to me that the size of Pi is unchanged, and so is the number of digits that have yet to be calculated.
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Message 961286 - Posted: 6 Jan 2010, 20:21:09 UTC - in response to Message 961276.  

Hmmm... I wonder if the (calculated) length of Pi obeys Moore's law?

EDIT: And by the way, I can't stand pumpkins... ;)

Some here can't either, Some build air cannons, catapults and such just to see who can lob one the farthest, All just to see a pumpkin go splat!
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Message 961378 - Posted: 7 Jan 2010, 0:46:47 UTC - in response to Message 961278.  

Seems to me that the size of Pi is unchanged, and so is the number of digits that have yet to be calculated.


Very true Ned. Should we be funding this research based on how much they decreased the number of remaining digits in the last budget cycle?

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Message 961439 - Posted: 7 Jan 2010, 4:55:47 UTC - in response to Message 961378.  

Very true Ned. Should we be funding this research based on how much they decreased the number of remaining digits in the last budget cycle?

Makes sense to me.

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Message 961604 - Posted: 7 Jan 2010, 19:03:47 UTC




ISTR there's a sci-fi story that is based on finding a long string of repeating 0's (zeroes) in Pi.

Does anyone know the name of it?

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Message 961624 - Posted: 7 Jan 2010, 20:12:25 UTC - in response to Message 961604.  

ISTR there's a sci-fi story that is based on finding a long string of repeating 0's (zeroes) in Pi.

Not sure why it'd be a sci-fi. If there are an infinite number of digits, and the probability of any digit is 1 in 10, then the law of large numbers says that there will be an infinitely long string of zeros somewhere in an infinitely long number.

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Message 961625 - Posted: 7 Jan 2010, 20:21:01 UTC - in response to Message 961624.  

ISTR there's a sci-fi story that is based on finding a long string of repeating 0's (zeroes) in Pi.

Not sure why it'd be a sci-fi. If there are an infinite number of digits, and the probability of any digit is 1 in 10, then the law of large numbers says that there will be an infinitely long string of zeros somewhere in an infinitely long number.


Of course, that infinitely long string of zeros would only be an infinitesimal portion of the whole string of digits making up pi.

Thinking like this makes my brain hurt.

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Message 961631 - Posted: 7 Jan 2010, 20:34:11 UTC - in response to Message 961625.  

ISTR there's a sci-fi story that is based on finding a long string of repeating 0's (zeroes) in Pi.

Not sure why it'd be a sci-fi. If there are an infinite number of digits, and the probability of any digit is 1 in 10, then the law of large numbers says that there will be an infinitely long string of zeros somewhere in an infinitely long number.


Of course, that infinitely long string of zeros would only be an infinitesimal portion of the whole string of digits making up pi.

Thinking like this makes my brain hurt.

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Message 961637 - Posted: 7 Jan 2010, 20:55:47 UTC - in response to Message 961625.  

ISTR there's a sci-fi story that is based on finding a long string of repeating 0's (zeroes) in Pi.

Not sure why it'd be a sci-fi. If there are an infinite number of digits, and the probability of any digit is 1 in 10, then the law of large numbers says that there will be an infinitely long string of zeros somewhere in an infinitely long number.


Of course, that infinitely long string of zeros would only be an infinitesimal portion of the whole string of digits making up pi.

Thinking like this makes my brain hurt.

Absolutely, along with an infinite number of other strings, like 01234567890123....
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Message 961643 - Posted: 7 Jan 2010, 21:08:30 UTC

If there are...


Exactly.

No one knows if pi is or isn't infinite and that's the (fun) and crux of the problem.

It's still sci-fi because, so far, no one has detected any continuously repeating strings. If/when any are found, Pi will cease to be considered an irrational number.

Martin
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