counterexample

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A friendly functional language for finding counterexamples 🎯

MIRROR of https://codeberg.org/catseye/Eightebed : A C-like language with explicit free which is nonetheless safe

Adversarial patch verification with executable evidence, minimized counterexamples, regression synthesis, and CI/VS Code integrations.

AI-Assisted Discovery and Construction of a Counterexample to the Convergence of Three-Block ADMM with the Identity Matrix as Its Third Constraint Block

a dynamic analysis tool to find interactions among configuration options in highly-configurable software.

Proof that 20 glasses of Ouzo don't matter by Mathematical Induction

Exact counterexample to the Greedy Superstring Conjecture, with Python verifiers, Lean 4 certificate, and formal paper

A 13-vertex disproof of the Annor–Howerton graph conjecture, with a structural proof, machine-readable witnesses, and exact verification

Counterexamples to Ashbaugh's higher-index PPW conjecture for Dirichlet Laplacian eigenvalue ratios, with exact-arithmetic verification.

An explicit C^4 counterexample to the Jacobian Conjecture via a normalized linear-times-cubic quartic factorization.

Exact counterexamples to a Lorentzianity conjecture for border-strip E-polynomials

Lean 4 certificates for C5[K4] counterexamples to WOWII Graph Conjectures 63 and 85

Exact verification code for the counterexample to Goemans' unsplittable-flow cost conjecture and the suprema of its three-parameter family (companion to Zenodo record)

Teacher-controlled deterministic counterexample compiler for signed-integer subtraction

Property-based testing plugin for tape-six powered by fast-check: t.prop() and t.scheduler() tester methods with structured counterexamples, seeds, and replay.

Exact Water Sort oracle and parallel search for a 5x16 counterexample

Stochastic parallelised search for counter- and extreme examples to inequalities between "nonbities" of 2 polynomials with nonnegative coefficients and of their product, where a nonbity of a polynomial quantifies its "distinctiveness" from a {0,1}-one. Related to unfair 0-1-polynomials conjecture.

Explicit 14-vertex counterexample to Written on the Wall II Conjecture 200, with proof, exact verifiers, and Lean 4 formalization

A 12-vertex counterexample to Stanley’s claw-free Schur-positivity conjecture