Pith Number

pith:RLFKP5EC

pith:2011:RLFKP5ECBKHLZRXYNPUVX6FPIG

not attested not anchored not stored refs pending

Qualitative study of perfect-fluid Friedmann-Lema\^{\i}tre-Robertson-Walker models with a cosmological constant

Sebastiano Sonego, Vittorino Talamini

arxiv:1112.4319 v1 · 2011-12-19 · physics.ed-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{RLFKP5ECBKHLZRXYNPUVX6FPIG}

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	2026-05-18T03:45:23.113262Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8acaa7f4820a8ebcc6f86be95bf8af418bbc85e4778265f3c1f056a861ef04c6

Aliases

arxiv: 1112.4319 · arxiv_version: 1112.4319v1 · doi: 10.48550/arxiv.1112.4319 · pith_short_12: RLFKP5ECBKHL · pith_short_16: RLFKP5ECBKHLZRXY · pith_short_8: RLFKP5EC

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/RLFKP5ECBKHLZRXYNPUVX6FPIG \
  | 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: 8acaa7f4820a8ebcc6f86be95bf8af418bbc85e4778265f3c1f056a861ef04c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6a3682f2cd9e477699f5395b7601abcafce0520aa0cc9139e1492ddcf93be20",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2011-12-19T12:37:13Z",
    "title_canon_sha256": "35cf044606b5c0ff5774f1d7f3dbfb1b8a1bea5451483d572e3b8d5f7b29cbdf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.4319",
    "kind": "arxiv",
    "version": 1
  }
}