{
  "date": "2026-10-07",
  "note": "Source snapshots for figure rendering. No solvers or benchmarks rerun. Plots are descriptive; figures do not establish independent validation.",
  "sources": [
    {
      "file": "plasma.json",
      "source": "../davis_plasma/exp3_results/results.json",
      "sha256": "4aa7c0b5428e3606fb884298130c81d424ff79cfcf6b6b8719a0744261112672"
    },
    {
      "file": "plasma-graph.json",
      "source": "../davis_plasma/exp1_results.json",
      "sha256": "46368963bebc3728b4ef1b15362fe8fbfcd10d3e7ac3aac7112eacabbb37eaec",
      "verbatim": "Byte-identical copy of the source record; values are not recomputed or corrected here.",
      "fieldNotes": {
        "graph.mean_degree": "Mean WEIGHTED degree (node strength) of the symmetrized weight matrix W, whose edge weights lie in (0,1]; it is not the combinatorial mean degree. The upstream key name is misleading. The combinatorial mean degree of the same graph is N_edges / N_nodes = 18002 / 2313 = 7.78.",
        "graph.N_edges": "Stored nonzero entries of the symmetrized matrix (scipy nnz), so each undirected edge is counted twice: 18002 entries = 9001 undirected edges.",
        "beta_sweep[].N_nodes": "The parameter sweep is run on a coarser 40 x 48 grid (1447 interior nodes) than the 48 x 64 baseline (2313 interior nodes), so sweep eigenvalues are not directly comparable with the baseline spectrum."
      },
      "upstreamIssue": "experiment1_plasma_spectral_gap.py writes degrees.mean() under the key mean_degree, where degrees = W.sum(axis=1) is weighted. Renaming the key upstream requires re-running the experiment; the record is mirrored unchanged and annotated instead."
    },
    {
      "file": "power-spectrum.json",
      "source": "../phaethon/crates/phaethon-core/tests/fixtures/ieee39-keff-base.json",
      "sha256": "3add274de08289619dc7f02000fef917a5b9a68ea24e25c01623ed4975660ee5"
    },
    {
      "file": "sssp.json",
      "source": "https://www.davisgeometric.com/sssp/data.mjs",
      "retrieved": "2026-10-07",
      "selection": "density, mechanisms, scenario summaries, provenance; raw timing runs omitted"
    },
    {
      "file": "oshun.json",
      "source": "oshun/oshun_data.js",
      "source_sha256": "089ed40620061ac3b7fafa5a09b90998bfc94397bb64ff44ed62e380e8e956d0",
      "selection": "measurements, staircase, dose, pottsguy"
    },
    {
      "file": "ieee39.toml",
      "source": "../phaethon/crates/phaethon-core/data/ieee39.toml"
    },
    {
      "file": "../evidence/biochar/manifest.json",
      "source": "biochar-phosphorus-gigi, paper and processed data snapshot",
      "sha256": "ceaf12275ff13747ea548d769817db5f8228f98691f471dd79b1a6eb7dd11b5e",
      "scope": "Secondary analysis of published measurements; no new laboratory experiment or field-runoff validation. No institutional collaboration or endorsement is claimed.",
      "researchSetting": "Independent",
      "reviewStatus": "Research note for scientific discussion; awaiting external review"
    }
  ]
}