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Towards fast one-block quantifier elimination through generalised critical values

Abstract : One-block quantifier elimination is comprised of computing a semi-algebraic description of the projection of a semi-algebraic set or of deciding the truth of a semi-algebraic formula with a single quantifier. Until now, it has been tackled in practice by using variants and improvements of the Cylindrical Algebraic Decomposition (CAD) algorithm. For example, see the software packages QEPCAD, RegularChains or the system Mathematica. This algorithmic framework suffers from a complexity that is doubly exponential in the dimension of the ambient space. However, it has been shown that one-block quantifier elimination can be performed within a complexity that is singly exponential in that dimension.
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Submitted on : Wednesday, September 9, 2020 - 10:40:45 AM
Last modification on : Tuesday, March 23, 2021 - 9:28:03 AM
Long-term archiving on: : Friday, December 4, 2020 - 5:23:08 PM

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  • HAL Id : hal-02929626, version 1

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Jérémy Berthomieu, Andrew Ferguson, Mohab Safey El Din. Towards fast one-block quantifier elimination through generalised critical values. ACM Communications in Computer Algebra, Association for Computing Machinery (ACM), 2020. ⟨hal-02929626⟩

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