A New Approach for Automatic Theorem Proving in Real Geometry

  • Authors:
  • Andreas Dolzmann;Thomas Sturm;Volker Weispfenning

  • Affiliations:
  • Fakultät für Mathematik und Informatik, Universität Passau, Germany;Fakultät für Mathematik und Informatik, Universität Passau, Germany;Fakultät für Mathematik und Informatik, Universität Passau, Germany

  • Venue:
  • Journal of Automated Reasoning
  • Year:
  • 1998

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Abstract

We present a new method for proving geometric theorems in the real planeor higher dimension. The method is derived from elimination set ideas forquantifier elimination in linear and quadratic formulas over the reals. Incontrast to other approaches, our method can also prove theorems whosecomplex analogues fail. Moreover, the problem formulation may involve orderinequalities. After specification of independent variables, nondegeneracyconditions are generated automatically. Moreover, when trying to proveconjectures that – apart from nondegeneracy conditions – do nothold in the claimed generality, missing premises are found automatically. Wedemonstrate the applicability of our method to nontrivial examples.