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Tim Wesserman or Edward Shore
03-16-2019, 03:39 PM
Post: #6
RE: Tim Wesserman or Edward Shore
Yes maybe a general question or PM would have been better but it is because I wanted the correct answer on the first try, the first time. I am sure any person that enjoys problem solving can appreciate knowing there is no need to check this man's work.

The End Goal: I want to create a function that can easily define the intersection of 2 Geodesics in a Non-Commutative Polar form and in terms of the radius of the Sphere it occupies.

Yes this does seem very similar to Spherical Coordinates system (SC). There are many differences and once I explain a few maybe it becomes clear. SC at the start sounds like traditional polar, "There is a base Unit R and it begins at the pole, as R sweeps out a circle the distance of 1 endpoint of R is of an exact ratio, this ratio is theta then, s=r(theta). It is very hard to disagree with this logic. Now we have many ways to measure [x=rcos(theta) y=rsin(theta)], [r=sqrt(x^2+y^2], on and on...this in not a post on Pre calculus topics.

This next step in SC is what I am changing with this function. To take an additional measurement in SC we will define a new pole, which by choice also happens to be the Z-axis in Cartesian. I have no doubt about the amount of human thought when in to defining step in SC. I am speculating that the main motivation for this was: it was also super convenient and lucky that a measurement taken greater that pi/2 would return negative Cosine values, which has also placed them in the negative Z. Big picture: we defined which poles are which [X,Y,Z]-axis with purpose, and that was to align it with Cartesian, but the biggest reason is now SC stays on a commutative ring. (a field where a*b=b*a) also look close at how highly restricted SC is.

I have defined a Coordinate system that is recursive based and returns very simple values, but it does this at the expense of many many many small tedious calculations. If I did not have a computer I would never dream of doing math like this.

The hardest part of explaining is over. Now, start in Polar, with the same "R" and same "theta" that pops to mind, now, take your measurement. It does not matter if it [R,theta], [1,pi/7], or [4^89x,13pi/4]. The only rule here is to take ALL of your "theta" measurement. Now where your new "R" is in "theta" space IS (exactly is) your new pole as a base for an additional rotational measurement called (F). Now that R is the segment that defines the pole in our new rotation (F). So we now rotate some amount of units in a counter-clockwise fashion and assign its value to Z.
The identity that connects these is:


All those words to say what I really want in this program is it to ask me 3 questions, What is your (R), what is your (theta), what is your (F) does ya go (X,Y,Z) Here is my (X,Y,Z).......Here is your (R,theta,F)

TLDR: Create a program that give me Poincare Sphere coordinates on an HP Prime because they are the greatest calculator in the world that what I do all my work on.

I have no doubt there are typos
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Tim Wesserman or Edward Shore - mathnovice - 03-15-2019, 10:44 PM
RE: Tim Wesserman or Edward Shore - JMB - 03-16-2019, 01:49 PM
RE: Tim Wesserman or Edward Shore - mathnovice - 03-16-2019 03:39 PM

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