Pith Number

pith:2E43LQ2O

pith:2004:2E43LQ2OVMR2OJZ2BKG3KJ5ZIK

not attested not anchored not stored refs pending

Canonical analysis of the BCEA topological matter model coupled to gravitation in (2+1) dimensions

Eugeniu M. Popescu, Laurent Freidel, R.B. Mann

arxiv:gr-qc/0411117 v1 · 2004-11-25 · 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{2E43LQ2OVMR2OJZ2BKG3KJ5ZIK}

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	2026-07-04T16:47:56.844221Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d139b5c34eab23a7273a0a8db527b942b073959bd3a2707a7e0aac742fae37a0

Aliases

arxiv: gr-qc/0411117 · arxiv_version: gr-qc/0411117v1 · doi: 10.48550/arxiv.gr-qc/0411117 · pith_short_12: 2E43LQ2OVMR2 · pith_short_16: 2E43LQ2OVMR2OJZ2 · pith_short_8: 2E43LQ2O

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/2E43LQ2OVMR2OJZ2BKG3KJ5ZIK \
  | 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: d139b5c34eab23a7273a0a8db527b942b073959bd3a2707a7e0aac742fae37a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41defb1d9c00e5304921d069c426b448b2ae0570372a79c8c6483cbeb85fa181",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2004-11-25T04:41:32Z",
    "title_canon_sha256": "2a0997cbaac786464892558a3b94edd23e39730541f1152efb6f784850535633"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0411117",
    "kind": "arxiv",
    "version": 1
  }
}