Pith Number

pith:2FN4LQOU

pith:2009:2FN4LQOUNCA4PDAM3KFZQOO7JL

not attested not anchored not stored refs pending

Statefinder diagnostic in a torsion cosmology

Chang-bo Sun, Ping Xi, Xin-zhou Li

arxiv:0903.4724 v1 · 2009-03-27 · 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{2FN4LQOUNCA4PDAM3KFZQOO7JL}

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.

Receipt and verification

First computed	2026-05-18T04:25:28.791380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d15bc5c1d46881c78c0cda8b9839df4ad6374ce379b4a1a7eecef53c1ec1c679

Aliases

arxiv: 0903.4724 · arxiv_version: 0903.4724v1 · doi: 10.48550/arxiv.0903.4724 · pith_short_12: 2FN4LQOUNCA4 · pith_short_16: 2FN4LQOUNCA4PDAM · pith_short_8: 2FN4LQOU

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/2FN4LQOUNCA4PDAM3KFZQOO7JL \
  | 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: d15bc5c1d46881c78c0cda8b9839df4ad6374ce379b4a1a7eecef53c1ec1c679

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7eb8a6828b8083baaec78689519e96307932a40a240c9fb31835efae681df9f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-03-27T01:46:14Z",
    "title_canon_sha256": "0cadd65a5b9065f4c09847f23bf1fa2c3706bbe83f4c8fc6bf3af2075a3e0f12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4724",
    "kind": "arxiv",
    "version": 1
  }
}