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Footsteps of pi

axleos.com

31–38 of 38 posts

Re: Footsteps of pi

#31

> The colors are arbitrary, and have no deeper meaning I thought that colouring the pattern by the instantaneous velocity of the ball would be an obvious improvement and might uncover further structure.

don't count on it! if it uncovered a structure to pi, that would be really big news

Re: Footsteps of pi

#32

> The colors are arbitrary, and have no deeper meaning I thought that colouring the pattern by the instantaneous velocity of the ball would be an obvious improvement and might uncover further structure.

There's no structure here- it's a random walk.

My question is which random walk!?

Re: Footsteps of pi

#33
post #17

Earlier quoted context omitted.

Well some numbers expose patterns when written as a continued fraction. In particular e becomes pretty regular. You can modify the continued fraction slightly to make pi regular as well, but the normal continued fraction sequence doesn't give much of an insight. Other than the fact that 3 + 1/(7 + 1/16)) is a damn good approximation (7 digits, pretty good for something that can be written using only 4 digits total: […

Phi/golden ratio also has a cool continued fraction sequence...it's only 1's all the way down

Larger integers in continued fractions mean you get 'more information' out of the limb. That means not only is Phi "1s all the way down" it is the continued fraction that converges the slowest. If you've ever used the iterated matrix product (which is a specific edge-case of the algorithm to convert continued fractions to decimals), you'll know how slow it is!

Re: Footsteps of pi

#34

I always wondered if some hidden pattern would be exposed when visualising numbers in unconventional ways in numbers with no known pattern such as Pi or prime numbers. A sort of multi-dimensional rendering that suddenly reveals a hidden pattern.

One example is Ulam spiral: https://en.wikipedia.org/wiki/Ulam_spiral

I guess the Ulam spiral is more an artefact of the cartesian plane than an "hidden pattern": https://www.youtube.com/watch?v=EK32jo7i5LQ

Re: Footsteps of pi

#35

Also If you do this for the Square Roots of the integers you can see every integer root is special and has it's own kind of shape. And the Squares are also very interesting in that they have no shape in this viewpoint. Just a dot. So you go from infinitesimal chaotic walk patterns to a single dot depending on if the integer is a square or not. maybe there could be a database, online encyclopedia of random-walks

I would think the squares are a line, not a dot?

well depends on how you interpret, could take '0' to mean 'stay where you are' or you could mean it 'go west' or whatever. but yes.

Re: Footsteps of pi

#36

> The colors are arbitrary, and have no deeper meaning I thought that colouring the pattern by the instantaneous velocity of the ball would be an obvious improvement and might uncover further structure.

There's no structure here- it's a random walk.

pi is normal, similar to but not random.

Re: Footsteps of pi

#37
post #36

Earlier quoted context omitted.

There's no structure here- it's a random walk.

pi is normal, similar to but not random.

Say more. I'm not sure I understand.

Closest I found was https://en.wikipedia.org/wiki/Normal_number, but this seems to mean that no matter what base you choose the digits are uniformly distributed. Meaning, yes, it's random.

Although, this SE thread: https://math.stackexchange.com/questions/51829/distribution-... seems to indicate that pi is not proven to be normal

Re: Footsteps of pi

#38

Earlier quoted context omitted.

I would think the squares are a line, not a dot?

well depends on how you interpret, could take '0' to mean 'stay where you are' or you could mean it 'go west' or whatever. but yes.

As defined, 0 was "north", but I think your alternative formulation is also interesting!
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