Pith Number

pith:DD52GS4P

pith:2004:DD52GS4PFAJQS6VN6WV6QAELRE

not attested not anchored not stored refs pending

Classical Cepheid Pulsation Models. X. The Period-Age Relation

F. Caputo (INAF-Osservatorio Astronomico di Roma), G. Bono (INAF-Osservatorio Astronomico di Roma), G. Pietrzynski (Warsaw University Observatory), M. Marconi (INAF- Osservatorio Astronomico di Capodimonte), S. Cassisi (INAF-Osservatorio Astronomico di Teramo), W. Gieren (Universidad de Concepcion)

arxiv:astro-ph/0411756 v1 · 2004-11-29 · astro-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{DD52GS4PFAJQS6VN6WV6QAELRE}

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

1 paper in Pith

SMUGGLE-Ring: Evolutionary link between nuclear star cluster and nuclear disk

Receipt and verification

First computed	2026-07-04T16:45:18.880430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18fba34b8f2813097aadf5abe8008b893d18281d48c63236808e3dec4a2b7c04

Aliases

arxiv: astro-ph/0411756 · arxiv_version: astro-ph/0411756v1 · doi: 10.48550/arxiv.astro-ph/0411756 · pith_short_12: DD52GS4PFAJQ · pith_short_16: DD52GS4PFAJQS6VN · pith_short_8: DD52GS4P

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/DD52GS4PFAJQS6VN6WV6QAELRE \
  | 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: 18fba34b8f2813097aadf5abe8008b893d18281d48c63236808e3dec4a2b7c04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "147cf71c1468291ad044bfcada19e1d7b1ba144249209233d1270a3dbb2ce83e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-11-29T10:44:35Z",
    "title_canon_sha256": "1df016df1f178ad29a63c51ab27c53e59cb5317dd78b5505f1be224052160dff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0411756",
    "kind": "arxiv",
    "version": 1
  }
}