#software testing Open access

P16-FALSIFICATION: A fail-closed adversarial evidence gate

Riccardo Giudici

Oct 2026 · Zenodo (CERN European Organization for Nuclear Research)

Abstract

Documentation-only v0.2.0 of P16-FALSIFICATION. This original English technical note develops a bounded finite-spectral counterexample step by step for the R15 primal-hybrid Maxwell pencil at beta=4, n=3: 323 negative, 8 zero and 641 positive finite modes, totaling 972. The explicit retrospective rejection rule is not presented as historically preregistered. A targeted local rerun reproduces the negative-mode count using R6 source carried in the R8 archive, but the original R6 checkout has not been separately authenticated. The later beta=24 stabilization tests a changed operator and does not erase the beta=4 failure or establish physical-cluster equivalence, continuum convergence or physical Maxwell validation. The earlier v0.1.0 source and tests remain at https://doi.org/10.5281/zenodo.22217921; this version uploads only a new explanatory PDF and does not copy or relicense prior software or third-party material. CC BY 4.0 applies only to this original PDF. Riccardo Giudici acts as an independent systems orchestrator; computational and AI assistance is disclosed, without institutional endorsement.

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