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Old April 09, 2010, 12:35 AM
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Quote:
Originally Posted by pjt33 View Post
Chileno didn't mention them: I did. They're one of the field extensions of the reals (along with complex numbers and octonions). Short version: they're what complex numbers would be if they had three orthogonal imaginary parts. They turn out to give a useful representation for rotations in 3D.
Trigonometry and Calculus, right?
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