Pith Number

pith:OLOUCUNT

pith:2009:OLOUCUNT23MKA3WYQH6REKYGYN

not attested not anchored not stored refs pending

The nature of compact groups of galaxies from cosmological simulations

Argentina), Cordoba, E. Diaz-Gimenez (2) ((1) IAP (CNRS & UPMC), France; (2) IATE, G. A. Mamon (1), Paris

arxiv:0909.3953 v3 · 2009-09-22 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OLOUCUNT23MKA3WYQH6REKYGYN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:34:28.245297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72dd4151b3d6d8a06ed881fd122b06c35f204eb1ed402aa947f70eb694b18349

Aliases

arxiv: 0909.3953 · arxiv_version: 0909.3953v3 · doi: 10.48550/arxiv.0909.3953 · pith_short_12: OLOUCUNT23MK · pith_short_16: OLOUCUNT23MKA3WY · pith_short_8: OLOUCUNT

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/OLOUCUNT23MKA3WYQH6REKYGYN \
  | 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: 72dd4151b3d6d8a06ed881fd122b06c35f204eb1ed402aa947f70eb694b18349

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdf31631385cae3f132c6b538d14abdef595c5851c98d9e919fb5a0365c6c703",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-22T10:34:44Z",
    "title_canon_sha256": "046572fa775bbb8b463264b505ad25cc01a7f57818a964f68c160febea54f2aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3953",
    "kind": "arxiv",
    "version": 3
  }
}