Pith Number

pith:BFFB2UJ5

pith:2005:BFFB2UJ5MJG4HTISXRCLOP5VGI

not attested not anchored not stored refs pending

Observational Constraints on Variable Chaplygin Gas

Yuan-Zhong Zhang, Zong-Kuan Guo

arxiv:astro-ph/0509790 v1 · 2005-09-27 · astro-ph · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BFFB2UJ5MJG4HTISXRCLOP5VGI}

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

Scalar Field Reconstructions of Holographic Dark Energy Models with Applications to Chaplygin Gas, DBI, Yang-Mills, and NLED Frameworks

Receipt and verification

First computed	2026-07-04T14:47:48.009893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

094a1d513d624dc3cd12bc44b73fb5320f14e9b13d5a041a36e97614b6cc5b66

Aliases

arxiv: astro-ph/0509790 · arxiv_version: astro-ph/0509790v1 · doi: 10.48550/arxiv.astro-ph/0509790 · pith_short_12: BFFB2UJ5MJG4 · pith_short_16: BFFB2UJ5MJG4HTIS · pith_short_8: BFFB2UJ5

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/BFFB2UJ5MJG4HTISXRCLOP5VGI \
  | 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: 094a1d513d624dc3cd12bc44b73fb5320f14e9b13d5a041a36e97614b6cc5b66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc9116ee0011a39d9ac8500f3d7cddb2318dffe92958de47e3dea1fc89602d11",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-27T06:16:18Z",
    "title_canon_sha256": "60e76d43aac6992206fedd7d188092827982fb7871125171cdff0dfd3ea6a8e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509790",
    "kind": "arxiv",
    "version": 1
  }
}