A. Tarski has shown in 1948 that one can perform quantifier elimination in the theory of real closed fields. The introduction of the Cylindrical Algebraic Decomposition (CAD) method has later allowed to design rather feasible algorithms. Our aim is to program a reflectional decision procedure for the Coq system, using the CAD, to decide whether a (possibly multivariate) system of polynomial inequalities with rational coefficients has a solution or not. We have therefore implemented various computer algebra tools like gcd computations, subresultant polynomial or Bernstein polynomials.
@InProceedings{mahboubi:DagSemProc.05021.17, author = {Mahboubi, Assia}, title = {{Programming and certifying a CAD algorithm in the Coq system}}, booktitle = {Mathematics, Algorithms, Proofs}, pages = {1--18}, series = {Dagstuhl Seminar Proceedings (DagSemProc)}, ISSN = {1862-4405}, year = {2006}, volume = {5021}, editor = {Thierry Coquand and Henri Lombardi and Marie-Fran\c{c}oise Roy}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.05021.17}, URN = {urn:nbn:de:0030-drops-2763}, doi = {10.4230/DagSemProc.05021.17}, annote = {Keywords: Computer algebra, Bernstein polynomials, subresultants, CAD, Coq, certification.} }
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