Pith Number

pith:J66JFO72

pith:2013:J66JFO72IBOZVE5A37L4AHZWFQ

not attested not anchored not stored refs pending

From Quantitative Spatial Operator to Qualitative Spatial Relation Using Constructive Solid Geometry, Logic Rules and Optimized 9-IM Model, A Semantic Based Approach

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

arxiv:1301.4780 v1 · 2013-01-21 · cs.CG · 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{J66JFO72IBOZVE5A37L4AHZWFQ}

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	2026-05-18T03:35:55.671340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fbc92bbfa405d9a93a0dfd7c01f362c24d65e76387cc74621aade3ad8017ef9

Aliases

arxiv: 1301.4780 · arxiv_version: 1301.4780v1 · doi: 10.48550/arxiv.1301.4780 · pith_short_12: J66JFO72IBOZ · pith_short_16: J66JFO72IBOZVE5A · pith_short_8: J66JFO72

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/J66JFO72IBOZVE5A37L4AHZWFQ \
  | 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: 4fbc92bbfa405d9a93a0dfd7c01f362c24d65e76387cc74621aade3ad8017ef9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c7ca277311f2e087f9bf575b1331913984785c295773517bf761cd83ae2492c",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2013-01-21T08:13:54Z",
    "title_canon_sha256": "8ad2ab45ef38c1082c7916c91ebb3045a52757af39d89f21a570aad2692a7106"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.4780",
    "kind": "arxiv",
    "version": 1
  }
}