Pith Number

pith:ZVBBY26I

pith:2018:ZVBBY26IE4GTLTTB7BYUQ2SDP5

not attested not anchored not stored refs pending

Ghost-free theories with arbitrary higher-order time derivatives

Hayato Motohashi, Masahide Yamaguchi, Teruaki Suyama

arxiv:1804.07990 v2 · 2018-04-21 · hep-th · 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{ZVBBY26IE4GTLTTB7BYUQ2SDP5}

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	2026-05-18T00:11:49.342171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd421c6bc8270d35ce61f871486a437f541e94f6b2d2fe305d4d6fd97a388c4c

Aliases

arxiv: 1804.07990 · arxiv_version: 1804.07990v2 · doi: 10.48550/arxiv.1804.07990 · pith_short_12: ZVBBY26IE4GT · pith_short_16: ZVBBY26IE4GTLTTB · pith_short_8: ZVBBY26I

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/ZVBBY26IE4GTLTTB7BYUQ2SDP5 \
  | 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: cd421c6bc8270d35ce61f871486a437f541e94f6b2d2fe305d4d6fd97a388c4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "161fb6d3dd91b84a6b44f7705273c3598def5d9c3adf6707dcfd1c7d4395cb3c",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2018-04-21T16:06:21Z",
    "title_canon_sha256": "5ce522cd990e78b0a8c509a9b12d2674d8285ce3f9f74498c7da39016dc0851b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.07990",
    "kind": "arxiv",
    "version": 2
  }
}