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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
The discussion revolves around the transformation of calculations on the 3-sphere (S^3) to the 2-sphere (S^2), particularly focusing on integrals and potential applications of the Hopf fibration. The scope includes theoretical aspects of manifold calculus and mathematical reasoning related to integration on manifolds.
Participants present various approaches and suggestions without reaching a consensus. Multiple competing views on how to handle the transformation and integration remain evident.
There are limitations regarding the assumptions necessary for applying the Fubini theorem in this context, as well as the specific conditions under which the integrand respects the structure of the Hopf fibration.
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.