Pith Number

pith:OO2ZMQDF

pith:2013:OO2ZMQDFCNYLXXTOOHWZMTHUFH

not attested not anchored not stored refs pending

From 9-IM Topological Operators to Qualitative Spatial Relations using 3D Selective Nef Complexes and Logic Rules for bodies

Christophe Cruz (Le2i), Christophe Nicolle (Le2i), Frank Boochs (i3mainz), Helmi Ben Hmida (i3mainz)

arxiv:1301.4992 v1 · 2013-01-21 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OO2ZMQDFCNYLXXTOOHWZMTHUFH}

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	2026-05-18T03:35:53.379927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73b59640651370bbde6e71ed964cf429f74b8a69894b037afb862d16a393b750

Aliases

arxiv: 1301.4992 · arxiv_version: 1301.4992v1 · doi: 10.48550/arxiv.1301.4992 · pith_short_12: OO2ZMQDFCNYL · pith_short_16: OO2ZMQDFCNYLXXTO · pith_short_8: OO2ZMQDF

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/OO2ZMQDFCNYLXXTOOHWZMTHUFH \
  | 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: 73b59640651370bbde6e71ed964cf429f74b8a69894b037afb862d16a393b750

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f738f9cd5169c709181be635f0e0da1f8140386e5ffcdc201015df79ec24c2e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2013-01-21T12:43:38Z",
    "title_canon_sha256": "8ac7a5e523a4891f2089e917ad7fd5327122d91cbf7e6811b8d52f4c1824b4de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.4992",
    "kind": "arxiv",
    "version": 1
  }
}