In four dimensions, there can be two orthogonal axes of simultaneous rotation (of two planes), right? Does that mean that we can measure such rotations of a 3-sphere in solid angles, much as we measure the rotation of a circle (or 2-sphere- still one axis) in radians? Would there be a notion of "solid revolutions" or "2-rotations"?
2025-01-13 05:32:27.1736746347
Units for Measuring Rotation of a 3-Sphere in Four Dimensions
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