Pith Number

pith:ZOIG4KUT

pith:2013:ZOIG4KUTZBNJXRGMAYVR7V7B6G

not attested not anchored not stored refs pending

Analysis of chemical abundances in planetary nebulae with [WC] central stars. II. Chemical abundances and the abundance discrepancy factor

(1, 2), (2) U. La Laguna, (3), 3), (3) IA-UNAM, (4), (4) PUC, (5) ((1) IAC, (5) U. Chile), A. Mesa-Delgado, Chile, C. Morisset, G. Delgado-Inglada, J. Garcia-Rojas, Mexico, M. Pe\~na, M. T. Ruiz, Spain

arxiv:1309.1663 v3 · 2013-09-06 · astro-ph.GA · 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{ZOIG4KUTZBNJXRGMAYVR7V7B6G}

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	2026-05-18T01:47:49.037991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb906e2a93c85a9bc4cc062b1fd7e1f1ae9d2f2f8dcbe22af2c80f43b70a9541

Aliases

arxiv: 1309.1663 · arxiv_version: 1309.1663v3 · doi: 10.48550/arxiv.1309.1663 · pith_short_12: ZOIG4KUTZBNJ · pith_short_16: ZOIG4KUTZBNJXRGM · pith_short_8: ZOIG4KUT

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/ZOIG4KUTZBNJXRGMAYVR7V7B6G \
  | 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: cb906e2a93c85a9bc4cc062b1fd7e1f1ae9d2f2f8dcbe22af2c80f43b70a9541

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8c5c095ff3c6f4e82d97ccb1c9a3cccc7bab03f471639dbffb6ad817de67406",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-09-06T14:53:31Z",
    "title_canon_sha256": "2c9212f8149f201c598fae068757d0561295835bf3dc9f5ca337e39fcf6dc488"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1663",
    "kind": "arxiv",
    "version": 3
  }
}