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More about rotations in 4 dimensions.
It is easy to take a quaternion and recognize the rotation it actually represents. This is about doing the same thing for 4 dimensional rota...
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So the geometric algebra specifies a rotation on Rn in quite a nice form. Given unit vectors a,b then defining $\sigma\colon ...
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python_test In [6]: import pandas as pd import numpy as np import matplotlib.pypl...
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I went over my old notes on deforming C2. Pairs of laminations of C2 by holomorphic curves was a recurring theme in ...
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