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thanks Phukraut. =)
I was playing around after the first 4 lines, probably should have made that clear. I'll edit my post to reduce the confusion, including phukraut's advice.
The interesting part is:
-1 = i^2 = j^2 = k^2
i = jk
(-1)*x = x*(-1) for all x
that is sufficient: you can derive all the other rules from just that. (the last one is just saying that -1 commutes with every element in the Quaternion).
I've heard that Quaternion's represent 3 dimensional rotations in some natural way. I understand how this might work theoretically, but have never really poked at it. Anyone want to chime up? =)
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Last edited by JHVH : 10-29-4004 BC at 09:00 PM. Reason: Time for a rest.
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