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 probiner April 2nd, 2016 03:11 PM

Is there an all-inclusive term that applies to difference or comparison? Is there a s

If I have

C = B-A

I guess I can say C is B with a origin or base that is not 0, but A.
I assume (?) C is called the delta from A to B. Now, there's a lot of things that concern this type of operation of having a different starting reference. Like when I measure the angle between two vectors I can assume I'm making one of them my new base (especially if I want a 360ยบ range and not just 180).
Is there an abstract name for this comparison operation, put something in a perspective of something else?
Also, Is there a name for the resulting value applicable to many types of transformation? Is "delta" it? Can I say rotation delta or scale delta, etc?

More over is there a symbol to denote "origin" or "base" or "reference" that one can use as a mark to indicate that one of two variables is the new base or the other is being put in reference of the one with the mark?

Thanks!

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