Careful algebraic translations of geometry theorems

  • Authors:
  • B. Kutzler

  • Affiliations:
  • Research Institute for Symbolic Computation (RISC-LINZ), Johannes Kepler University, A-4040 Linz, Austria

  • Venue:
  • ISSAC '89 Proceedings of the ACM-SIGSAM 1989 international symposium on Symbolic and algebraic computation
  • Year:
  • 1989

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Abstract

Modern application areas like computer-aided design and robotics have revived interest in geometry. The algorithmic techniques of computer algebra are important tools for solving large classes of nonlinear geometric problems. However, their application requires a translation of geometric problems into algebraic form. So far, this algebraization process has not gained special attention, since it was considered “obvious”.In the context of automated geometry theorem proving, the use of algebraic deduction techniques lead to very promising results, but it seemed to change the nature of proof problems from deciding the validity of a theorem to finding nondegeneracy conditions under which the theorem holds.A careful analysis shows, that this is mainly due to the “careless” translation method. A careful translation technique is presented that resolves this defect. The usefulness of the new algebraization method is demonstrated on concrete examples, a practical comparison with the former “careless” translation is done.Keywords: computational analytical geometry, automated geometry theorem proving.