Pith Number

pith:RWOXY3Q5

pith:1997:RWOXY3Q5R3BNQGS33HZGG4AXW6

not attested not anchored not stored refs pending

Matrix Elements of Thiemann's Hamiltonian Constraint in Loop Quantum Gravity

Carlo Rovelli, Roberto De Pietri, Roumen Borissov

arxiv:gr-qc/9703090 v1 · 1997-03-31 · 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{RWOXY3Q5R3BNQGS33HZGG4AXW6}

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	2026-05-18T02:37:29.478798Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d9d7c6e1d8ec2d81a5bd9f2637017b7883fc51bd30534a7d89ab8a2cf1c119a

Aliases

arxiv: gr-qc/9703090 · arxiv_version: gr-qc/9703090v1 · doi: 10.48550/arxiv.gr-qc/9703090 · pith_short_12: RWOXY3Q5R3BN · pith_short_16: RWOXY3Q5R3BNQGS3 · pith_short_8: RWOXY3Q5

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/RWOXY3Q5R3BNQGS33HZGG4AXW6 \
  | 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: 8d9d7c6e1d8ec2d81a5bd9f2637017b7883fc51bd30534a7d89ab8a2cf1c119a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8540ac07445e3c4988802df6cbc9053044d15ba41f8ac031a3e871d35da171fc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1997-03-31T19:18:40Z",
    "title_canon_sha256": "6ed6814f237f7e6686f0ace82cb7ffb83121a8a1ccaad8ff6becba2128d50794"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9703090",
    "kind": "arxiv",
    "version": 1
  }
}