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 Post subject: Mathematical scales
PostPosted: Mon Jun 26, 2017 4:15 pm 
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Joined: Sep 28, 2016
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0, 1, 2, 3, 4... - linear scale.
1, 2, 4, 8, 16... - logarithmic scale.
0, 1/2, 1, 2, :infinity: - the hell is this one ?
Because everybody is like "this is totally legit, but idk how it's called or what's the general rule ".

More generally:
0; n^0; :infinity:
0; n^-1; n^0; n^1; :infinity:
0; n^-2; n^-1; n^-1/2; n^0; n^1/2; n^1; n^2; :infinity:
0; n^-3; n^-2; n^-3/2; n^-1; n^-2/3; n^-1/2; n^-1/3; n^0; n^1/3 n^1/2; n^2/3; n^1; n^3/2; n^2; n^3; :infinity: (not sure for this one)
Add negative numbers on the left for full scale.

And so on

If you scale your X;Y coordinates like this, 1/x looks like a straight line between 0; :infinity: and :infinity:;0 and x^2 looks like a -sinx rotated 45 degrees around origin.

Also, it's very symmetrical: if you multiply numbers equidistant from 1 or -1, you get 1; if you multiply the exponents of numbers equidistant from n or -n, you get 1, if you multiply numbers 1/2 of scale away from each other (full scale includes negative numbers) you get -1 !

So, who knows how that's called ?

nice quotes from this forum

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 Post subject: Re: Mathematical scales
PostPosted: Tue Jun 27, 2017 6:37 pm 

Joined: Nov 03, 2015
Posts: 44
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I'm not sure what the scale would be called, but it sounds very related to stereographic projection and the Riemann sphere, which are associated with the tangent function.

Let's say f(x) = tan(x * pi/4). Then

f(0) = 0
f(1/2) = sqrt(2) - 1
f(1) = 1
f(3/2) = sqrt(2) + 1
f(2) = infinity

This satisfies the equation f(1 + x) * f(1 - x) = 1, except where that's undefined.

But... it sounds like that's not quite everything you're looking for.

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