# DailyDirt: Pi Math

### from the *urls-we-dig-up* dept

National Pie Day is not actually March 14th (although it really should be, if only to make it more memorable). But here's to the number, not the delicious dessert.
- Does pi contain every set of finite number sequences? The answer to that question may not be known, but the first trillion or so digits of pi appear to be statistically random -- with 0-9 appearing with even distributed frequency. [url]
- It's possible to calculate the nth digit of pi without calculating every previous digit. So the gazillionth digit of pi can be verified, if you really need to know it. [url]
- If you're thinking about coming up with a new way to calculate pi, you can check your work for the first several trillion digits. Beyond about 10 trillion digits, you're into record breaking territory, and you'll need to adopt some other strategies. [url]

Filed Under: calculations, irrational, math, numbers, pi

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Michael Ho(profile),15 Feb 2013 @ 6:37pm## Re: Re: Re:

sorry, wrong, there is a FINITE number of FINITE SequencesIF that statement were true (it's not).. what is the largest finite sequence? You can't name it... because I'll just add one more number to it. The set is INFINITE.

And it's actually possible that some infinite sets of numbers are larger than other infinite sets of numbers. For example, the set of irrational numbers (which is infinite) is larger than the set of rational numbers (but the set of rational numbers is ALSO infinite). There are also more real numbers than natural numbers.

I am admittedly not a mathematician, but you may wish to review the work of Georg Cantor.

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