Pith Number

pith:A7S4PHDR

pith:2019:A7S4PHDROCLFHCLDUUOYULLM3O

not attested not anchored not stored refs pending

Galactic radial abundance gradients: cepheids and photoionized nebulae

S. Andrievsky, W.J. Maciel

arxiv:1906.01686 v1 · 2019-06-04 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A7S4PHDROCLFHCLDUUOYULLM3O}

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

2D-Galactic chemical evolution: the role of the spiral density wave

Receipt and verification

First computed	2026-05-17T23:44:06.544457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07e5c79c717096538963a51d8a2d6cdbb9f18ced736eee2d47c823a2a56fe87a

Aliases

arxiv: 1906.01686 · arxiv_version: 1906.01686v1 · doi: 10.48550/arxiv.1906.01686 · pith_short_12: A7S4PHDROCLF · pith_short_16: A7S4PHDROCLFHCLD · pith_short_8: A7S4PHDR

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/A7S4PHDROCLFHCLDUUOYULLM3O \
  | 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: 07e5c79c717096538963a51d8a2d6cdbb9f18ced736eee2d47c823a2a56fe87a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b8a2800fac7ef0ebd2e0eb359c75ffcae47ba402f1b13123751ff5bb6b6784b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-06-04T19:10:03Z",
    "title_canon_sha256": "d5572e0a575d145533897598b4543d896f739484b56ecd6170ade3815bfdee73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.01686",
    "kind": "arxiv",
    "version": 1
  }
}