Quantifier Elimination over Real Closed Fields

Revision with unchanged content. This work investigates the quantifier elimination problem in real closed fields with respect to the application in description logics. The motivation for the investigation in this topic is mainly based on the demand for an extension of description logic systems to support a default concrete domain for non-linear multivariate equations and inequations. The authors provide a literature overview that summarizes main mathematical tools for checking whether a set of non-linear multivariate (in-)equatins is satisfiable (quantifier elimination problem). The authors shortly describe how application examples are handled with a prototype implementation.