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 connections between the sheets along the branch cuts and the branch points at of square root type are clearly visible. The viewpoint is from the lower half plane. Real parts of the continuation of over the Riemann sphere. The branch points at the north pole and the intersection of the equator with the ‐plane
