Pith Number

pith:XYYSKEB2

pith:1998:XYYSKEB2GZDRKXIQ75FBDRVA32

not attested not anchored not stored refs pending

Nonlinear Beat Cepheid Models

J.P. Beaulieu, J.R. Buchler, P. Yecko, Z. Kollath

arxiv:astro-ph/9804111 v2 · 1998-04-10 · 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{XYYSKEB2GZDRKXIQ75FBDRVA32}

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	2026-05-18T01:07:37.633200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be3125103a3647155d10ff4a11c6a0de8aff7153c4c3709795b0c5731a0f04c9

Aliases

arxiv: astro-ph/9804111 · arxiv_version: astro-ph/9804111v2 · doi: 10.48550/arxiv.astro-ph/9804111 · pith_short_12: XYYSKEB2GZDR · pith_short_16: XYYSKEB2GZDRKXIQ · pith_short_8: XYYSKEB2

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/XYYSKEB2GZDRKXIQ75FBDRVA32 \
  | 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: be3125103a3647155d10ff4a11c6a0de8aff7153c4c3709795b0c5731a0f04c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdf0c67b779fbcd69a30033629a97d46f8aeb8302b71135d0a1898f44c18e278",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-04-10T18:41:12Z",
    "title_canon_sha256": "485bcd9514256a271c1d82bc52726185700175bf259004af0684c94931a7f27c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9804111",
    "kind": "arxiv",
    "version": 2
  }
}