Pith Number

pith:HPENDQ5A

pith:2019:HPENDQ5APGGHC6SUYL677DL6YN

not attested not anchored not stored refs pending

Metastability in Quadratic Gravity

Alberto Salvio

arxiv:1902.09557 v2 · 2019-02-25 · gr-qc · astro-ph.CO · hep-ph · hep-th

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HPENDQ5APGGHC6SUYL677DL6YN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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

1 paper in Pith

Conditions for positivity of energy in superrenormalizable polynomial gravity

Receipt and verification

First computed	2026-05-17T23:46:12.222045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bc8d1c3a0798c717a54c2fdff8d7ec36364715cf48928a2a0e0cc8558a82930

Aliases

arxiv: 1902.09557 · arxiv_version: 1902.09557v2 · doi: 10.48550/arxiv.1902.09557 · pith_short_12: HPENDQ5APGGH · pith_short_16: HPENDQ5APGGHC6SU · pith_short_8: HPENDQ5A

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/HPENDQ5APGGHC6SUYL677DL6YN \
  | 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: 3bc8d1c3a0798c717a54c2fdff8d7ec36364715cf48928a2a0e0cc8558a82930

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d7ee71d76ede7945dc150194cb42f99613166c95795061af54e9cb4dacbde21",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-02-25T19:00:03Z",
    "title_canon_sha256": "14ae54192ddd257522ecb8bfcdeb7d51b9c95ed05c0c068d43c169f2f937e6db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09557",
    "kind": "arxiv",
    "version": 2
  }
}