I don't think I will get the ability to distinguish two homeomorphic spaces from each other back, ever.
it might be instructive to look how special functions identities for elliptic integrals/ellipse arc length evaporate into trigonometric identities in the limit. It may not get you back the ability to distinguish circles from ellipses, though.
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@BiCapitalize : in particular, starting with section 22.5 of the NIST DLMF: https://dlmf.nist.gov/22.5 (Special Values of the Jacobian Elliptic Functions)Thanks. Twitter will use this to make your timeline better. UndoUndo
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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