Gotthold Schwarz is of a voice type whose term arose when?
Gotthold Schwarz Gotthold Schwarz (born 2 May 1952 in Zwickau) is a German bass-baritone singer and conductor. Based in Leipzig, he started as a member of the Thomanerchor and has conducted the Gewandhausorchester. He is the 17th Thomaskantor after Johann Sebastian Bach.
Schwarz alternating method In mathematics, the Schwarz alternating method or alternating process is an iterative method introduced in 1869-1870 by Hermann Schwarz in the theory of conformal mapping. Given two overlapping regions in the complex plane in each of which the Dirichlet problem could be solved, Schwarz described an iterative method for solving the Dirichlet problem in their union, provided their intersection was suitably well behaved. This was one of several constructive techniques of conformal mapping developed by Schwarz as a contribution to the problem of uniformization, posed by Riemann in the 1850s and first resolved rigorously by Koebe and Poincaré in 1907. It furnished a scheme for uniformizing the union of two regions knowing how to uniformize each of them separately, provided their intersection was topologically a disk or an annulus. From 1870 onwards Carl Neumann also contributed to this theory.