Abstract (EN):
We characterize in algebraic terms the matroids that are not orientable. We solve also a problem of Rota, by providing a criterion for deciding, for a proposition in projective geometry, whether its combinatorial counterpart is valid for matroids. (C) 1994 Academic Press, Inc.
Idioma:
Inglês
Tipo (Avaliação Docente):
Científica
Nº de páginas:
11