The mathematical theory of electricity and magnetism (1911)
Jeans, James Hopwood, Sir, 1877-1946 · Cambridge [Eng.] : University Press · leaf 289
IF-plane. … 2-surface. ^A Fig. 93. which has already been considered in § 317. The Riemanns surface appro-priate for the representation of the two-valued function z^ may be supposedto be a surface of two infinite sheets connected along a branch line whichextends over the positive half of the real axis of z. To…
Electricity · Magnetism
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