The mathematical theory of electricity and magnetism (1911)
Jeans, James Hopwood, Sir, 1877-1946 · Cambridge [Eng.] : University Press · leaf 289
a given value of z there may be many values of the potential, but thesevalues will refer to the different sheets of the Riemanns surface. If anyregion on this surface is selected, which does not contain any branch pointsor lines, we can regard this region as a real two-dimensional region, and… … IF-plane.
Electricity · Magnetism
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
