Pith Number

pith:C3RDVLY4

pith:2009:C3RDVLY42D4ILKHTSJI5LMSOLQ

not attested not anchored not stored refs pending

Building a control sample for galaxy pairs

2), Argentina. (2) Facultad de Ciencis Astronomicas y Geofisicas, Argentina. (3) Universite de Lyon; Universite Lyon 1, Centre de Recherche Astrophysique de Lyon, Ciudad de Buenos Aires, Ecole Normale Superieure de Lyon, France.), Jeremy Blaizot (3). ((1) Instituto de Astronomia y Fisica del Espacio, Josefa Perez (1, Observatoire de Lyon, Patricia Tissera (1), Universidad Nacional de La Plata

arxiv:0904.2845 v2 · 2009-04-18 · astro-ph.CO · 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{C3RDVLY42D4ILKHTSJI5LMSOLQ}

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	2026-05-18T02:13:59.227273Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16e23aaf1cd0f885a8f39251d5b24e5c06159746de0cefa2fb7b20221e7902c0

Aliases

arxiv: 0904.2845 · arxiv_version: 0904.2845v2 · doi: 10.48550/arxiv.0904.2845 · pith_short_12: C3RDVLY42D4I · pith_short_16: C3RDVLY42D4ILKHT · pith_short_8: C3RDVLY4

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/C3RDVLY42D4ILKHTSJI5LMSOLQ \
  | 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: 16e23aaf1cd0f885a8f39251d5b24e5c06159746de0cefa2fb7b20221e7902c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de826484309e26ac2ae03833c78eb67f89e7cf555c91175edd8fec6fdbe9dae4",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-18T12:25:21Z",
    "title_canon_sha256": "54368f013717ffd90a985c71b75dccc8275a0cc8c8a718aaa8ca153719ad4195"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2845",
    "kind": "arxiv",
    "version": 2
  }
}