Pith Number

pith:U6K5IO27

pith:2015:U6K5IO27Y45C5T3FSNU7W2N6DP

not attested not anchored not stored refs pending

Modified Gravity Models Admitting Second Order Equations of Motion

Aimeric Coll\'eaux, Sergio Zerbini

arxiv:1508.06178 v2 · 2015-08-25 · 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{U6K5IO27Y45C5T3FSNU7W2N6DP}

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

2 papers in Pith

Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A$^*$

All $2D$ generalised dilaton theories from $d\geq 4$ gravities

Receipt and verification

First computed	2026-05-18T01:28:46.656732Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a795d43b5fc73a2ecf659369fb69be1befc2ac34b58036430f15819663576ba1

Aliases

arxiv: 1508.06178 · arxiv_version: 1508.06178v2 · doi: 10.48550/arxiv.1508.06178 · pith_short_12: U6K5IO27Y45C · pith_short_16: U6K5IO27Y45C5T3F · pith_short_8: U6K5IO27

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/U6K5IO27Y45C5T3FSNU7W2N6DP \
  | 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: a795d43b5fc73a2ecf659369fb69be1befc2ac34b58036430f15819663576ba1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9d295acfe091a812128daf89d38dfd955f1db4229f734747ae31669f9c28fbe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-08-25T14:59:40Z",
    "title_canon_sha256": "32b6a6379ee646e659fd1de1108132b990d695b1b1c9553b0f81b25b2fe9af96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.06178",
    "kind": "arxiv",
    "version": 2
  }
}