# What exactly changed between Hillman's 2013 deep-samples PDF and the 2018 amendment, so I know which copy's equations to use?

- id: art_01M5NNCQKFJTSWFFGACK8R0YSN
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T11, T12 · tags: none
- updated: 2026-10-24T00:36:24.810Z
- url: https://veyrul.com/articles/art_01M5NNCQKFJTSWFFGACK8R0YSN

Hillman's 2013 PDF (archived) prints equation 6 as t = T^-n, inconsistent with its own result T' = T^(n'/n); the 18 May 2018... amendment dated May 16, 2018 corrects equations 6 and 7 and states so; apart from layout, the texts differ at the date line, the amendment sentence and equations 6-7 (curator diff).

Hillman's 2013 PDF (archived) prints equation 6 as t = T^-n, inconsistent with its own result T' = T^(n'/n); the 18 May 2018... amendment dated May 16, 2018 corrects equations 6 and 7 and states so; apart from layout, the texts differ at the date line, the amendment sentence and equations 6-7 (curator diff).

Curator qualifications: The 'we had'/'there were' wording change (producer E6) was not located by the curator's line grep (line breaks); not confirmed. Staged after the freeze: L00 decides intake. Text comparison only (pdftotext and normalised diff); no rendering. Curator amendment CA-AM-0010 (2026-10-22): Editorial: read as 'the amendment dated May 16, 2018'. The stray '18 May 2018...' is a drafting error; the only date in the 2018 PDF is 'May 16, 2018' (readback 5297d6c0d01c380d, line 4).

Limitations: Text comparison only (pdftotext and normalised diff); no rendering.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "http://web.archive.org/web/20221011161219id_/https:/www.openexr.com/documentation/TheoryDeepPixels.pdf",
      "note": "cited at http://web.archive.org/web/20221011161219id_/https://www.openexr.com/documentation/TheoryDeepPixels.pdf; IA id_ 20221011161219 TheoryDeepPixels.pdf (pdftotext lines 4, 123-126); openexr 1899a456 OpenEXR/doc/TheoryDeepPixels.pdf (lines 4, 10, 128-131); normalised character diff 2013 vs 2018"
    },
    {
      "url": "https://github.com/AcademySoftwareFoundation/openexr/blob/1899a456cbafb213c4a53c35eb3203296f92e503/OpenEXR/doc/TheoryDeepPixels.pdf",
      "note": "IA id_ 20221011161219 TheoryDeepPixels.pdf (pdftotext lines 4, 123-126); openexr 1899a456 OpenEXR/doc/TheoryDeepPixels.pdf (lines 4, 10, 128-131); normalised character diff 2013 vs 2018"
    },
    {
      "url": "http://web.archive.org/web/20221011161219id_/https://www.openexr.com/documentation/TheoryDeepPixels.pdf",
      "note": "observed URL (dated/alias form of the cited catalogue source; canonical identity retained)"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Hillman's 2013 PDF (archived) prints equation 6 as t = T^-n, inconsistent with its own result T' = T^(n'/n); the 18 May 2018... amendment dated May 16, 2018 corrects equations 6 and 7 and states so; apart from layout, the texts differ at the date line, the amendment sentence and equations 6-7 (curator diff). · locator: cited at http://web.archive.org/web/20221011161219id_/https://www.openexr.com/documentation/TheoryDeepPixels.pdf; IA id_ 20221011161219 TheoryDeepPixels.pdf (pdftotext lines 4, 123-126); openexr 1899a456 OpenEXR/doc/TheoryDeepPixels.pdf (lines 4, 10, 128-131); normalised character diff 2013 vs 2018 · source: http://web.archive.org/web/20221011161219id_/https:/www.openexr.com/documentation/TheoryDeepPixels.pdf

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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