Pith Number

pith:ZYP53GUJ

pith:2011:ZYP53GUJTKXPYGLDYH4V5XMIG7

not attested not anchored not stored refs pending

On the mass-to-light ratios of fossil groups. Are they simply dark clusters?

Claudia Mendes de Oliveira, Eduardo S. Cypriano, Eli Rykoff, Eric D. Miller, Raimundo Lopes de Oliveira, Renato Dupke, Robert N. Proctor

arxiv:1108.1349 v1 · 2011-08-05 · 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{ZYP53GUJTKXPYGLDYH4V5XMIG7}

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	2026-05-18T02:01:01.034833Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce1fdd9a899aaefc1963c1f95edd8837d9ca223f236c86251cb7195f378748ed

Aliases

arxiv: 1108.1349 · arxiv_version: 1108.1349v1 · doi: 10.48550/arxiv.1108.1349 · pith_short_12: ZYP53GUJTKXP · pith_short_16: ZYP53GUJTKXPYGLD · pith_short_8: ZYP53GUJ

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/ZYP53GUJTKXPYGLDYH4V5XMIG7 \
  | 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: ce1fdd9a899aaefc1963c1f95edd8837d9ca223f236c86251cb7195f378748ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24d5bd0fa0ec3bd445149b6e05333e097629e5413d3bc0aeadea7c370720fcf6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-05T15:22:22Z",
    "title_canon_sha256": "3873294f1498df9587b22809c7a6b8504e3f4b64acb540a307a27459905efa80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.1349",
    "kind": "arxiv",
    "version": 1
  }
}