Pith Number

pith:O3LP4F2V

pith:1997:O3LP4F2VTDIWN3XOL64QQHEP3G

not attested not anchored not stored refs pending

Quantum Mechanics of a Point Particle in 2+1 Dimensional Gravity

Hans-Juergen Matschull, Max Welling (U Utrecht)

arxiv:gr-qc/9708054 v2 · 1997-08-22 · 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{O3LP4F2VTDIWN3XOL64QQHEP3G}

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	2026-05-18T01:06:44.363770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76d6fe175598d166eeee5fb9081c8fd9bbb5efd9801a90f995d43729b5afc5ff

Aliases

arxiv: gr-qc/9708054 · arxiv_version: gr-qc/9708054v2 · doi: 10.48550/arxiv.gr-qc/9708054 · pith_short_12: O3LP4F2VTDIW · pith_short_16: O3LP4F2VTDIWN3XO · pith_short_8: O3LP4F2V

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/O3LP4F2VTDIWN3XOL64QQHEP3G \
  | 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: 76d6fe175598d166eeee5fb9081c8fd9bbb5efd9801a90f995d43729b5afc5ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c68a5d772e28659a42959dcee6c0cb8689f777b564bbbe72f43b8886e5b0c863",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1997-08-22T17:08:31Z",
    "title_canon_sha256": "e6d865c1cfb60b68f6b1463c70e51f66aaaaae2de442897aaf298f38d95b4d63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9708054",
    "kind": "arxiv",
    "version": 2
  }
}