Pith Number

pith:CQ4WRWO2

pith:2009:CQ4WRWO2CJM7AH3N5OH37TF3YW

not attested not anchored not stored refs pending

Evolution of ethnocentrism on undirected and directed Barab\'asi-Albert networks

Dietrich Stauffer, F.W.S. Lima, Tarik Hadzibeganovic

arxiv:0905.2672 v1 · 2009-05-16 · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CQ4WRWO2CJM7AH3N5OH37TF3YW}

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	2026-05-18T02:13:39.118719Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

143968d9da1259f01f6deb8fbfccbbc594f23f976609303db760a66c397aa52e

Aliases

arxiv: 0905.2672 · arxiv_version: 0905.2672v1 · doi: 10.48550/arxiv.0905.2672 · pith_short_12: CQ4WRWO2CJM7 · pith_short_16: CQ4WRWO2CJM7AH3N · pith_short_8: CQ4WRWO2

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/CQ4WRWO2CJM7AH3N5OH37TF3YW \
  | 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: 143968d9da1259f01f6deb8fbfccbbc594f23f976609303db760a66c397aa52e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "feb6ca72d50de1c8eafd5b18b700e502338d242cd22d35b9eed3fd69d2ccb256",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2009-05-16T10:48:06Z",
    "title_canon_sha256": "caff17cd4c63fa1df65600260763e1ec14ee5b18e9ea5d0f28e4c543fce1ad28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2672",
    "kind": "arxiv",
    "version": 1
  }
}