Pith Number

pith:4ULRIZWB

pith:2010:4ULRIZWBXHQYLWXDL2SXX36X2P

not attested not anchored not stored refs pending

Improvements in the X-ray luminosity function and constraints on the Cosmological parameters from X-ray luminous clusters

2), A. Del Popolo (1, Auf dem Hugel 71, Bonn, Catania, Germany; (3) Dipartimento di Metodologie Chimiche e Fisiche per l'Ingegneria, G. Lanzafame (4) ((1) Dipartimento di Fisica e Astronomia, Istituto Nazionale di Astrofisica, Italy), Italy; (2) Argelander-Institut fur Astronomie, Italy; (4) Osservatorio Astrofisico di Catania, Universit'a di Catania, Univesita di Catania, V. Costa (3), Viale A. Doria 6, Viale Andrea Doria 6, Via S. Sofia 78

arxiv:1001.1443 v1 · 2010-01-09 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ULRIZWBXHQYLWXDL2SXX36X2P}

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	2026-05-18T03:00:27.504709Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5171466c1b9e185dae35ea57befd7d3c78f4d17fba5ea52a08eb8388ec91dca

Aliases

arxiv: 1001.1443 · arxiv_version: 1001.1443v1 · doi: 10.48550/arxiv.1001.1443 · pith_short_12: 4ULRIZWBXHQY · pith_short_16: 4ULRIZWBXHQYLWXD · pith_short_8: 4ULRIZWB

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/4ULRIZWBXHQYLWXDL2SXX36X2P \
  | 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: e5171466c1b9e185dae35ea57befd7d3c78f4d17fba5ea52a08eb8388ec91dca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c43e7f10867a8f02ebd11db7eb6c6353734b183fc7e4136cf528340631a935c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-09T20:05:04Z",
    "title_canon_sha256": "f1866b02abeed184105ce91ff8544e6dc4b1e8a5ae756c4103e2dfb7c1907b76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.1443",
    "kind": "arxiv",
    "version": 1
  }
}