Pith Number

pith:V6BVXUXE

pith:2015:V6BVXUXEIAZONZ3Y6CBJS5A2VG

not attested not anchored not stored refs pending

A condition for a perfect-fluid space-time to be a generalized Robertson-Walker space-time

Carlo Alberto Mantica, Luca Guido Molinari, Uday Chand De

arxiv:1508.05883 v3 · 2015-08-24 · math.DG · gr-qc · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V6BVXUXEIAZONZ3Y6CBJS5A2VG}

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	2026-05-18T01:19:38.659095Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af835bd2e44032e6e778f08299741aa9a4714227e7e35d67066b19ac09843246

Aliases

arxiv: 1508.05883 · arxiv_version: 1508.05883v3 · doi: 10.48550/arxiv.1508.05883 · pith_short_12: V6BVXUXEIAZO · pith_short_16: V6BVXUXEIAZONZ3Y · pith_short_8: V6BVXUXE

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/V6BVXUXEIAZONZ3Y6CBJS5A2VG \
  | 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: af835bd2e44032e6e778f08299741aa9a4714227e7e35d67066b19ac09843246

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c834f77ad8c6fd0537124a3ffa4531eaaa13dec77535d14f505be2146be87d8c",
    "cross_cats_sorted": [
      "gr-qc",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-08-24T17:29:34Z",
    "title_canon_sha256": "71d807dbc41ba2fbc6f3b6086ae9021bddf3aa32a6e464f09a22690364703bf2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.05883",
    "kind": "arxiv",
    "version": 3
  }
}