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@prefix orcid: <https://orcid.org/> .
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sub:Head {
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sub:assertion {
  d:artifact-Tarski-lean dct:license <http://www.apache.org/licenses/LICENSE-2.0>;
    d:authorIdentityBinding orcid:0000-0002-8042-4131;
    d:commitAuthorEmail "myle54xton@gmail.com";
    d:commitAuthorName "Myles Axton";
    d:commitDate "2026-08-07T10:03:56Z"^^xsd:dateTime;
    d:commitMessage "Add copyright and license information to Tarski.lean";
    d:commitSha "802b1d583032c44ea9affb2a61b0c8cda6c60b72";
    d:copyrightLineQuoted "Copyright 2026 John Myles Axton orcid:0000-0002-8042-4131";
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    d:hasNamespace "Synthetic (Lean namespace; declarations are qualified as Synthetic.<name>, e.g. Synthetic.cong_refl)";
    d:licenseEvidence "Two independent, mutually consistent sources: (1) the file's own header states 'Licensed under the Apache License, Version 2.0'; (2) the GitHub repository API (api.github.com/repos/johnmaxton/lean4-starter) reports license.spdx_id = 'Apache-2.0', backed by a LICENSE file at repo root matching the standard Apache 2.0 text.";
    d:priorCommitDate "2026-07-18T14:18:18Z"^^xsd:dateTime;
    d:priorCommitMessage "Add Tarski's synthetic Euclidean geometry (Stages 0-4)";
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    d:asClaimedByArtifact "This file is dependency-free: it compiles with core Lean 4 alone (`lean Tarski.lean`), no Mathlib required.";
    d:verificationMethod "grep for '^import' in Tarski.lean returned zero matches; lake-manifest.json at the pinned commit lists packages: [] (zero external dependencies); the successful build in NP-A used only this manifest.";
    d:verificationResult "CONFIRMED (this claim is machine-verifiable and is additionally recorded in NP-A's compilation evidence)." .
  
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    d:asClaimedByArtifact "GeoCoq (J. Narboux, M. Beeson, P. Boutry, G. Braun, C. Gries, P. Schreck, et al.): the first machine-checked ascent.";
    d:verificationNote "The repo's top-level AUTHORS file lists Beeson, Boutry, Braun, Gries, Kastenbaum, Narboux (omitting Schreck); the coq-geocoq-axioms.opam package metadata's authors field lists exactly Beeson, Braun, Boutry, Gries, Narboux, Schreck -- matching the artifact's six named credits verbatim. Both sources were checked; the opam file is the one that fully confirms the claim as written.";
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    d:verificationNote "GeoCoq's official documentation page confirms l7_13 is defined in the Ch07_midpoint module and concerns congruence preservation under point-reflection/midpoint symmetry, consistent with the artifact's claim that it corresponds to SST theorem 7.13. This is a spot-check of one specific chapter/lemma pairing, not a verification of every 'SST n.m' tag in the file (see NP-D).";
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    d:verificationNote "Title, three authors, publisher, and 1983 date confirmed via Springer Link and a Journal of Symbolic Logic review. Chapter-by-chapter content of the book was NOT opened or checked against the artifact's per-stage chapter tags (see NP-D, negative space) except for the single spot-check in d:cite-geocoq-l7_13 below.";
    d:verifiedAgainst <https://link.springer.com/book/10.1007/978-3-642-69418-9>, <https://www.cambridge.org/core/journals/journal-of-symbolic-logic/article/abs/wolfram-schwabhauser-wanda-szmielew-and-alfred-tarski-ein-axiomatischer-aujbau-der-euklidischen-geometrie-metamathematische-methoden-in-der-geometrie-hochschultext-springerverlag-berlin-etc-1983-pp-1171-wolfram-schwabhauser-metamathematische-betrachtungen-metamathematische-methoden-in-der-geometrie-pp-173457/47332AEED25CD5AB54C9A989C7D1718B> .
  
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    d:verificationNote "Publication venue, volume, issue, and page range (175-214) confirmed as consistent across PhilPapers, Semantic Scholar, and Cambridge Core listings.";
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  sub:assertion dct:description "Each statement here was checked against a specific, cited, dereferenceable external document during this session (via HTTP fetch and web search), not recalled from training data. Where a claim's underlying content could not be checked in full (e.g. every 'SST n.m' chapter tag), that limit is stated explicitly in d:verificationNote rather than extended by inference.";
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