Pith Number

pith:WEIRHDQZ

pith:2014:WEIRHDQZD6PP3OS5B6BIOL57QG

not attested not anchored not stored refs pending

Square root two period ratios in Cepheid and RR Lyrae variable stars

A. Zee, John G. Learned, Michael Hippke

arxiv:1407.3442 v3 · 2014-07-13 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WEIRHDQZD6PP3OS5B6BIOL57QG}

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	2026-05-18T02:42:45.866795Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b111138e191f9efdba5d0f82872fbf81805f1b95e74ecd9768bc17940be839cb

Aliases

arxiv: 1407.3442 · arxiv_version: 1407.3442v3 · doi: 10.48550/arxiv.1407.3442 · pith_short_12: WEIRHDQZD6PP · pith_short_16: WEIRHDQZD6PP3OS5 · pith_short_8: WEIRHDQZ

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/WEIRHDQZD6PP3OS5B6BIOL57QG \
  | 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: b111138e191f9efdba5d0f82872fbf81805f1b95e74ecd9768bc17940be839cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9612d5048c7272cb374b85be9ee8e911656427ff271f8deceae8022f77d8a5cd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-07-13T08:47:31Z",
    "title_canon_sha256": "4f06714af343a84d063c7cfa6efcf21d37a881c45bd6efec603694e8e79cede2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.3442",
    "kind": "arxiv",
    "version": 3
  }
}