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Real and imaginary parts of the continuation of  over the  . The real part is a faithful representation of the Riemann surface of  . Real part of the continuation of  over the  . The logarithmic branch point at  is clearly visible. The viewpoint is from the lower half‐plane. Real parts of the continuation of  over the Riemann sphere. The branch points are at the intersection of the equator with the  ‐plane
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