1. Explicit examples of nonsolvable weakly hyperbolic operators with real coefficients. Author Pravda-Starov, Karel Subjects *PAPER, *DIMENSIONS, *MATHEMATICS, *MATHEMATICAL research, *MATHEMATICS education, *HYPERBOLIC groups, *EXAMPLE Abstract We give in this paper two explicit examples of nonsolvable weakly hyperbolic operators with real coefficients in two-space-dimensions. [ABSTRACT FROM AUTHOR] Published 2007 Full Text View/download PDF