Pith Number

pith:DCE2CE2A

pith:2013:DCE2CE2A5FC3BKIOVZVX5SEAEO

not attested not anchored not stored refs pending

Shear-free perfect fluids with linear equation of state

Radu Slobodeanu

arxiv:1301.5508 v2 · 2013-01-23 · gr-qc · hep-th · math-ph · math.DG · 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{DCE2CE2A5FC3BKIOVZVX5SEAEO}

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	2026-05-18T01:52:04.306189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1889a11340e945b0a90eae6b7ec88023b69274f737f8651ffef596371064ce9e

Aliases

arxiv: 1301.5508 · arxiv_version: 1301.5508v2 · doi: 10.48550/arxiv.1301.5508 · pith_short_12: DCE2CE2A5FC3 · pith_short_16: DCE2CE2A5FC3BKIO · pith_short_8: DCE2CE2A

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/DCE2CE2A5FC3BKIOVZVX5SEAEO \
  | 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: 1889a11340e945b0a90eae6b7ec88023b69274f737f8651ffef596371064ce9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82b2abdce7bd6dce246a5f55e9b5f8b004637f91b4afb5b7f386df9a5967e183",
    "cross_cats_sorted": [
      "hep-th",
      "math-ph",
      "math.DG",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-01-23T14:14:52Z",
    "title_canon_sha256": "6d1fb991c907ea8e07fe80c5236015bc6c1f2727c779f4bf71244147e7431511"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5508",
    "kind": "arxiv",
    "version": 2
  }
}