Pith Number

pith:YOD7J2YM

pith:1993:YOD7J2YMSDTIG3CH33AVRGSZ2N

not attested not anchored not stored refs pending

Extended Gravity Theories and the Einstein-Hilbert Action

David Wands

arxiv:gr-qc/9307034 v1 · 1993-07-23 · 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{YOD7J2YMSDTIG3CH33AVRGSZ2N}

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.

Cited by

3 papers in Pith

Lagrangian Extensions of Newtonian Gravity constrained by Solar System tests

Testing General Relativity with Present and Future Astrophysical Observations

Planar AdS multi-NUT spacetimes and Kaluza-Klein multi-monopoles

Receipt and verification

First computed	2026-07-04T17:25:35.260490Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c387f4eb0c90e6836c47dec1589a59d363ec3971161f4a5edb313f1163fafc49

Aliases

arxiv: gr-qc/9307034 · arxiv_version: gr-qc/9307034v1 · doi: 10.48550/arxiv.gr-qc/9307034 · pith_short_12: YOD7J2YMSDTI · pith_short_16: YOD7J2YMSDTIG3CH · pith_short_8: YOD7J2YM

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/YOD7J2YMSDTIG3CH33AVRGSZ2N \
  | 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: c387f4eb0c90e6836c47dec1589a59d363ec3971161f4a5edb313f1163fafc49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2c93552580c427e1660323e246055c83da6e21041ab54b42368e73a19fca978",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1993-07-23T15:33:00Z",
    "title_canon_sha256": "a0278ccaa6dccc27ff811fa8cb34819d96b43751277c8b0d76ca1c46b19c225d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9307034",
    "kind": "arxiv",
    "version": 1
  }
}