Pith Number

pith:UL37RDLQ

pith:1994:UL37RDLQXENSUGD6HLTTWCX6LF

not attested not anchored not stored refs pending

A Note on the Semi-Classical Approximation in Quantum Gravity

Gilad Lifschytz, Miguel E. Ortiz, Samir D. Mathur

arxiv:gr-qc/9412040 v3 · 1994-12-13 · gr-qc · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UL37RDLQXENSUGD6HLTTWCX6LF}

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	2026-05-18T04:38:07.012466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2f7f88d70b91b2a187e3ae73b0afe59498bd89d51ad376c0f69630ac89fcb7a

Aliases

arxiv: gr-qc/9412040 · arxiv_version: gr-qc/9412040v3 · doi: 10.48550/arxiv.gr-qc/9412040 · pith_short_12: UL37RDLQXENS · pith_short_16: UL37RDLQXENSUGD6 · pith_short_8: UL37RDLQ

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/UL37RDLQXENSUGD6HLTTWCX6LF \
  | 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: a2f7f88d70b91b2a187e3ae73b0afe59498bd89d51ad376c0f69630ac89fcb7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37b3af9abd2db40b5119c54355deb9306d9539bdaa39d59b681bc9ad2ef52a6e",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1994-12-13T16:45:31Z",
    "title_canon_sha256": "b4924faefdb3d42406fe666a3a99448d349a01202aead8f4da6cf20564e1aa8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9412040",
    "kind": "arxiv",
    "version": 3
  }
}