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Pith Number

pith:BCQ7CQPI

pith:2005:BCQ7CQPIFW5W45O3DDGOUSDT6T
not attested not anchored not stored refs pending

Probing Cosmic Acceleration Beyond the Equation of State: Distinguishing between Dark Energy and Modified Gravity Models

2), (2) Princeton University), Amol Upadhye (2), David N. Spergel (2) ((1) The University of Texas at Dallas, Mustapha Ishak (1

arxiv:astro-ph/0507184 v2 · 2005-07-07 · astro-ph · gr-qc · hep-th

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{BCQ7CQPIFW5W45O3DDGOUSDT6T}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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

Receipt and verification
First computed 2026-05-18T04:30:24.272585Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

08a1f141e82dbb6e75db18ccea4873f4dd332bad12e81824be8b71288ca81812

Aliases

arxiv: astro-ph/0507184 · arxiv_version: astro-ph/0507184v2 · doi: 10.48550/arxiv.astro-ph/0507184 · pith_short_12: BCQ7CQPIFW5W · pith_short_16: BCQ7CQPIFW5W45O3 · pith_short_8: BCQ7CQPI
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/BCQ7CQPIFW5W45O3DDGOUSDT6T \
  | 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: 08a1f141e82dbb6e75db18ccea4873f4dd332bad12e81824be8b71288ca81812
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "381ae612cd9c05f0dac55546336fc5a2400b17a615f6cf5cabd18323ef3a868e",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-07-07T20:33:45Z",
    "title_canon_sha256": "53ce02e3d7af0bd503ef7c239561413c05013227c07b8020afe2d1a478d372a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0507184",
    "kind": "arxiv",
    "version": 2
  }
}