Pith Number

pith:WZYQHBY7

pith:2009:WZYQHBY7HGYN2YSGIXKP2MFUKK

not attested not anchored not stored refs pending

Notes on disentangling of spectra II. Intrinsic line-profile variability due to Cepheid pulsations

M. Slechta, P. Hadrava, P. Skoda

arxiv:0909.0610 v1 · 2009-09-03 · astro-ph.SR · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WZYQHBY7HGYN2YSGIXKP2MFUKK}

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	2026-05-18T02:12:00.395495Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b67103871f39b0dd624645d4fd30b4528d90d4e0366818c45cb90ab7f79380c9

Aliases

arxiv: 0909.0610 · arxiv_version: 0909.0610v1 · doi: 10.48550/arxiv.0909.0610 · pith_short_12: WZYQHBY7HGYN · pith_short_16: WZYQHBY7HGYN2YSG · pith_short_8: WZYQHBY7

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/WZYQHBY7HGYN2YSGIXKP2MFUKK \
  | 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: b67103871f39b0dd624645d4fd30b4528d90d4e0366818c45cb90ab7f79380c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac9cdb654d434f933b98d1f08d452d00ac7ed6473e6099b466529913a1b95caa",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-03T13:12:56Z",
    "title_canon_sha256": "1dc9ee8fb26f9e627bbe17dc55302cad34e101eb97cb7591b1d443cbcc45c48d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0610",
    "kind": "arxiv",
    "version": 1
  }
}