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A First Complete Algorithm for Real Quantifier Elimination in Isabelle/HOL
Conference proceeding   Open access

A First Complete Algorithm for Real Quantifier Elimination in Isabelle/HOL

Katherine Kosaian, Yong Kiam Tan and André Platzer
Proceedings of the 12th ACM SIGPLAN International Conference on Certified Programs and Proofs, pp.211-224
ACM Conferences
CPP '23: 12th ACM SIGPLAN International Conference on Certified Programs and Proofs
01/11/2023
DOI: 10.1145/3573105.3575672
url
https://doi.org/10.1145/3573105.3575672View
Published (Version of record) Open Access

Abstract

We formalize a multivariate quantifier elimination (QE) algorithm in the theorem prover Isabelle/HOL. Our algorithm is complete, in that it is able to reduce any quantified formula in the first-order logic of real arithmetic to a logically equivalent quantifier-free formula. The algorithm we formalize is a hybrid mixture of Tarski’s original QE algorithm and the Ben-Or, Kozen, and Reif algorithm, and it is the first complete multivariate QE algorithm formalized in Isabelle/HOL.
Theory of computation -- Logic and verification

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