Pith Number

pith:IVBR3PZ6

pith:2014:IVBR3PZ6ITW5HCXNM5A4SDEYMX

not attested not anchored not stored refs pending

Lessons from $f(R,R_c^2,R_m^2, L_m)$ gravity: Smooth Gauss-Bonnet limit, energy-momentum conservation and nonminimal coupling

David Wenjie Tian, Ivan Booth

arxiv:1404.7823 v3 · 2014-04-30 · gr-qc · astro-ph.CO · 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{IVBR3PZ6ITW5HCXNM5A4SDEYMX}

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	2026-05-18T01:37:02.328099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45431dbf3e44edd38aed6741c90c9865f41d892bd676896ce9a2b3028dee535f

Aliases

arxiv: 1404.7823 · arxiv_version: 1404.7823v3 · doi: 10.48550/arxiv.1404.7823 · pith_short_12: IVBR3PZ6ITW5 · pith_short_16: IVBR3PZ6ITW5HCXN · pith_short_8: IVBR3PZ6

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/IVBR3PZ6ITW5HCXNM5A4SDEYMX \
  | 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: 45431dbf3e44edd38aed6741c90c9865f41d892bd676896ce9a2b3028dee535f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e7c82d5752c04c0c43da80e1a8503e5c316b8e2b7ffbf54d80009ed39244aa8",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-04-30T18:25:01Z",
    "title_canon_sha256": "2251e0c24942ae2e2c8e68e1707c120847e36d2eb92b64e1ba94fe0e60671e66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.7823",
    "kind": "arxiv",
    "version": 3
  }
}