$\epsilon$-isothermic surfaces in pseudo-Euclidean 3-space

Armando M. V. Corro, Carlos M. C. Riveros, Marcelo L. Ferro

In this paper we describe the $\epsilon$-isothermic surfaces in the pseudo-Euclidean 3-space and we obtain the pseudo-Calapso equation. In sequence, we classify the Dupin surfaces in pseu…