Pith Number

pith:BVBRVX3J

pith:2012:BVBRVX3J6NB542VR6LNRORWSR5

not attested not anchored not stored refs pending

Recursive Subdivision of Urban Space and Zipf's law

Jiejing Wang, Yanguang Chen

arxiv:1209.5544 v1 · 2012-09-25 · 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{BVBRVX3J6NB542VR6LNRORWSR5}

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	2026-05-17T23:58:06.101453Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d431adf69f343de6ab1f2db1746d28f713756af9b279bb85818e628c9bb7516

Aliases

arxiv: 1209.5544 · arxiv_version: 1209.5544v1 · doi: 10.48550/arxiv.1209.5544 · pith_short_12: BVBRVX3J6NB5 · pith_short_16: BVBRVX3J6NB542VR · pith_short_8: BVBRVX3J

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/BVBRVX3J6NB542VR6LNRORWSR5 \
  | 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: 0d431adf69f343de6ab1f2db1746d28f713756af9b279bb85818e628c9bb7516

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1499d769346cf98ea1568d34ef1b562904a63f2575599244c36a7bb6730f3734",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2012-09-25T09:01:23Z",
    "title_canon_sha256": "eda5cef3862445b6ab74cb050e216004e173a5c17cbb5bb3a1b1819841335ffe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5544",
    "kind": "arxiv",
    "version": 1
  }
}