Pith Number

pith:HIIRXYVL

pith:2005:HIIRXYVLQC3EFCGMP6O5AJAQ3R

not attested not anchored not stored refs pending

Testing the accuracy of the Hydro-PM approximation in numerical simulations of the Lyman-alpha forest

Martin G. Haehnelt, Matteo Viel, Volker Springel

arxiv:astro-ph/0504641 v2 · 2005-04-28 · astro-ph

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HIIRXYVLQC3EFCGMP6O5AJAQ3R}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Machine Learning Techniques for Astrophysics and Cosmology: Lyman-$\alpha$ forest

Receipt and verification

First computed	2026-07-04T16:52:17.167904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a111be2ab80b64288cc7f9dd02410dc71d4b850075df3db244415ce7879f6d7

Aliases

arxiv: astro-ph/0504641 · arxiv_version: astro-ph/0504641v2 · doi: 10.48550/arxiv.astro-ph/0504641 · pith_short_12: HIIRXYVLQC3E · pith_short_16: HIIRXYVLQC3EFCGM · pith_short_8: HIIRXYVL

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/HIIRXYVLQC3EFCGMP6O5AJAQ3R \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3a111be2ab80b64288cc7f9dd02410dc71d4b850075df3db244415ce7879f6d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4ce60655f5b84f27d61c99656ff1bf01b443802149c2ccb187a857fc92644e6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-04-28T17:17:18Z",
    "title_canon_sha256": "df5611f5de01194f1319ce1617731df14d193ecdd6a94d60fe44e547a979cffa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0504641",
    "kind": "arxiv",
    "version": 2
  }
}