Das Definitionsgebiet der Grundinvarianten eines Tensors

In this article we investigate the conditions that the principal invariants of a tensor have to satisfy so that it may be symmetric or orthogonal. In particular, we treat the relationship between the domain of definition of the principal invariants of a symmetric deviator and the space of its eigenvalues, and we apply this mapping to the yield conditions ofTresca and ofv. Mises.