htaati
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how can I transform my calculation on S^3 to the S^2.
for example a trace or a Fourier transform
for example a trace or a Fourier transform
mathwonk said:hopf map? consider R^4 as C^2, the complex 2 space, and consider all complex "lines" in C^2. this family of complex subspaces is homeomorphic to S^2, hence this fibres S^3 over S^2 with fibers equal to circles. this is the famous hopf map from S^3 to S^2.