Pith Number

pith:GC7SKWNA

pith:2016:GC7SKWNA5SI7EA2XUE75ONH2OV

not attested not anchored not stored refs pending

Higher-order theories of gravity: diagnosis, extraction and reformulation via non-metric extra degrees of freedom

Alessio Belenchia, Eolo Di Casola, Marco Letizia, Stefano Liberati

arxiv:1612.07749 v2 · 2016-12-22 · 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{GC7SKWNA5SI7EA2XUE75ONH2OV}

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	2026-05-18T00:10:30.874845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

30bf2559a0ec91f20357a13fd734fa757385caaf995d91d8e0b06dd33981f5cf

Aliases

arxiv: 1612.07749 · arxiv_version: 1612.07749v2 · doi: 10.48550/arxiv.1612.07749 · pith_short_12: GC7SKWNA5SI7 · pith_short_16: GC7SKWNA5SI7EA2X · pith_short_8: GC7SKWNA

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/GC7SKWNA5SI7EA2XUE75ONH2OV \
  | 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: 30bf2559a0ec91f20357a13fd734fa757385caaf995d91d8e0b06dd33981f5cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99825e881e07cedb38263af77fb0d3bbb13ba4809feb01ac80bf4d587aee20e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2016-12-22T18:52:33Z",
    "title_canon_sha256": "96fcbf8d80c0ffc63f16fea0d7328449d031f7fedc6834cfb6e82cad1a61efab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.07749",
    "kind": "arxiv",
    "version": 2
  }
}