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Stefan Szeider

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#artificial intelligence Preprint Oct 2026

SqueezeBench: Saturation-Resilient Evaluation of Mathematical Capability

AI systems are making rapid progress in mathematics, but this progress is hard to measure. Benchmarks of solved problems saturate, and in benchmarks of open problems each problem can be resolved for the first time only once. We present SqueezeBench, a benchmark that is resilient to saturation: a success raises the bar...

Pablo Manrique, Hai Xia, Stefan Szeider · 0 citations
Preprint Aug 2026

Neurosymbolic Discovery of Algebraic Graph Constructions

The smallest known counterexample to the Bernhart-Kainen dispersability conjecture is identified, a $16-vertex graph that enumeration found as raw data, and the agent found an explicit algebraic construction.

David Seka, Stefan Szeider · 0 citations
#artificial intelligence Preprint Jul 2026

Streaming LRAT Certificates into Lean Theorems

The tool lrat-catcher is proposed, which turns a certificate into a Lean theorem, which checks the certificate as a stream while the solver is still running, and supports cube-and-conquer and formulas derived by preprocessing, to still form Lean proofs of the original formula.

Stefan Szeider · 2 citations
Jul 2026

LeanCSP: A Framework for Certifying Constraint Reformulation and Solving in Lean

This work introduces a framework that addresses both verification levels in the Lean theorem prover, and can be used to prove formulation-level properties, such as equivalence, equisatisfiability, and the correctness of symmetry-breaking constraints, parametrically for entire problem families.

Pablo Manrique, Stefan Szeider · 0 citations

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