Pith Number

pith:G7O7KDGL

pith:2009:G7O7KDGL442XIKWGN7HMPP4T3O

not attested not anchored not stored refs pending

Viscous Cardassian universe

Chang-bo Sun, Jia-Ling Wang, Xin-zhou Li

arxiv:0903.3087 v1 · 2009-03-18 · 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{G7O7KDGL442XIKWGN7HMPP4T3O}

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	2026-05-18T02:35:00.348871Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37ddf50ccbe735742ac66fcec7bf93dbb4034cf1782d54cc934df212020dd360

Aliases

arxiv: 0903.3087 · arxiv_version: 0903.3087v1 · doi: 10.48550/arxiv.0903.3087 · pith_short_12: G7O7KDGL442X · pith_short_16: G7O7KDGL442XIKWG · pith_short_8: G7O7KDGL

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/G7O7KDGL442XIKWGN7HMPP4T3O \
  | 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: 37ddf50ccbe735742ac66fcec7bf93dbb4034cf1782d54cc934df212020dd360

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd0075ce67632f4fecca12acdd79d67813f1e3301f82d965150e86feb1a95d6f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-03-18T04:41:30Z",
    "title_canon_sha256": "5f4def26e9dc44b0e30c3210b19b65eb0db1dbb7ae94e1fe9a2650058219c122"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.3087",
    "kind": "arxiv",
    "version": 1
  }
}