Pith Number

pith:CEPGC4CV

pith:2001:CEPGC4CVQPUPB7RFFPZYHSTE5B

not attested not anchored not stored refs pending

Hydrodynamics of an ultra-relativistic fluid in the flat anisotropic cosmological model

D.I. Podolsky, V.P. Ruban

arxiv:gr-qc/0102087 v1 · 2001-02-20 · 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{CEPGC4CVQPUPB7RFFPZYHSTE5B}

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	2026-05-18T02:37:36.194365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

111e61705583e8f0fe252bf383ca64e85958a1e6cddcfcde29dade154263f504

Aliases

arxiv: gr-qc/0102087 · arxiv_version: gr-qc/0102087v1 · doi: 10.48550/arxiv.gr-qc/0102087 · pith_short_12: CEPGC4CVQPUP · pith_short_16: CEPGC4CVQPUPB7RF · pith_short_8: CEPGC4CV

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/CEPGC4CVQPUPB7RFFPZYHSTE5B \
  | 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: 111e61705583e8f0fe252bf383ca64e85958a1e6cddcfcde29dade154263f504

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "346cfa85d1ac0b6343e4722f786344c88934eeb9f6e59793ebb32420ea38c77d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2001-02-20T17:42:02Z",
    "title_canon_sha256": "b01c088576ad59e9d7b7bc780bbc88df6f4887a1e56404b6fcde172c59be2982"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0102087",
    "kind": "arxiv",
    "version": 1
  }
}