Pith Number

pith:V7FJMRLE

pith:2008:V7FJMRLECWCQRVEPFJGCBAPCSK

not attested not anchored not stored refs pending

A minimal set of invariants as a systematic approach to higher order gravity models

Jacob Moldenhauer (The University of Texas at Dallas), Mustapha Ishak

arxiv:0808.0951 v2 · 2008-08-07 · astro-ph · 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{V7FJMRLECWCQRVEPFJGCBAPCSK}

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	2026-05-18T02:35:15.361311Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

afca964564158508d48f2a4c2081e2929310ea5af931c2e6912ed564340bfcc3

Aliases

arxiv: 0808.0951 · arxiv_version: 0808.0951v2 · doi: 10.48550/arxiv.0808.0951 · pith_short_12: V7FJMRLECWCQ · pith_short_16: V7FJMRLECWCQRVEP · pith_short_8: V7FJMRLE

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/V7FJMRLECWCQRVEPFJGCBAPCSK \
  | 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: afca964564158508d48f2a4c2081e2929310ea5af931c2e6912ed564340bfcc3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20a64f769c0436b6ac1aa197c37fdfccca6b8236a0a7ac4f1aef4ba0ad73edb5",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-08-07T03:08:55Z",
    "title_canon_sha256": "674c2bf2c4b463a32de76bc25780280e8b547eb41a5059e7e4e83f7c8ea05741"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.0951",
    "kind": "arxiv",
    "version": 2
  }
}