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(nn)
[nn]
(like a tensor)
This is the reasonfor doing cofactors.
useful special cases
cross product
cross productwith matrices:handy to have fornon-GA people
for future reference...
ax
projection on (dual) plane n
Rodrigues: R = I cosQ + (1-cosQ ) nnT + sinQ nx
= I + sinQ nx + (1-cosQ) (nx)2