Gamma-Linien: Zur Geometrie realer und komplexer Funktionen (moderne Analyse
71,27 €
The history of mathematics is, to a considerable extent, connected with the study of solutions of the equation f(x)=a=const for functions f(x) of one real or complex variable. Therefore, it is surprising that we know very little about solutions of u(x,y)=A=const for functions of two real variables.
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