Pith Number

pith:DWHUCU27

pith:2021:DWHUCU27IPUZ6JIQPS722VEV5T

not attested not anchored not stored refs pending

The Ostrogradsky instability can be overcome by quantum physics

Gabriel Menezes, John F Donoghue

arxiv:2105.00898 v2 · 2021-05-03 · hep-th · gr-qc · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DWHUCU27IPUZ6JIQPS722VEV5T}

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	2026-07-05T03:08:29.316961Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d8f41535f43e99f25107cbfad5495ecd9d2b640488f26ba0ad64b164a3ebf9c

Aliases

arxiv: 2105.00898 · arxiv_version: 2105.00898v2 · doi: 10.48550/arxiv.2105.00898 · pith_short_12: DWHUCU27IPUZ · pith_short_16: DWHUCU27IPUZ6JIQ · pith_short_8: DWHUCU27

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/DWHUCU27IPUZ6JIQPS722VEV5T \
  | 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: 1d8f41535f43e99f25107cbfad5495ecd9d2b640488f26ba0ad64b164a3ebf9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "378d9f6b7b27412c7af9a73fa8d0039f57241f53bbb68a796a69692d97b01f2c",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2021-05-03T14:33:25Z",
    "title_canon_sha256": "9fd4b6eb02b2e37a9ed29a453882f35ccbb4fcc61b7ec9103ba8a63f9c79b5ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.00898",
    "kind": "arxiv",
    "version": 2
  }
}