Karl Willy Wagner was a German pioneer in the theory of electronic filters. He is noted by Hendrik Bode as being one of two Germans whose;
The other German being referred to is Wilhelm Cauer

Wilhelm Cauer

Wilhelm Cauer was a German mathematician and scientist. He is most noted for his work on the analysis and synthesis of electrical filters and his work marked the beginning of the field of network synthesis...

. Wagner was the second referee on Cauer's milestone 1926 thesis but Wagner fell out with Cauer in 1942 after he refused to support Wagner's research proposals with the German Society of Electrical Engineers (Verband der Elektrotechnik - the VDE

Verband der Elektrotechnik, Elektronik und Informationstechnik

The VDE Association for Electrical, Electronic and Information Technologies e.V. is one of Europe’s largest technical-scientific associations with 35,000 members, including 1,300 corporate and institutional members and 8,000 students.- Organization :...

).

Wagner was removed from office in 1936 because he refused to dismiss his Jewish employees.