Pith Number

pith:Q7TOILFE

pith:2012:Q7TOILFETWACQEWXB2JEEXHUX5

not attested not anchored not stored refs pending

The maximum number of intersections of two polygons

Felix G\"unther

arxiv:1207.0996 v2 · 2012-07-04 · math.CO · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q7TOILFETWACQEWXB2JEEXHUX5}

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	2026-05-18T02:27:41.290739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87e6e42ca49d802812d70e92425cf4bf797ea9b1d77b2e7333539fdd15ee295f

Aliases

arxiv: 1207.0996 · arxiv_version: 1207.0996v2 · doi: 10.48550/arxiv.1207.0996 · pith_short_12: Q7TOILFETWAC · pith_short_16: Q7TOILFETWACQEWX · pith_short_8: Q7TOILFE

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/Q7TOILFETWACQEWXB2JEEXHUX5 \
  | 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: 87e6e42ca49d802812d70e92425cf4bf797ea9b1d77b2e7333539fdd15ee295f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e2fe8271c2b0430ecac39f116531688ec909f70f36a75b77a7ec65f30a7770a",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-07-04T14:33:22Z",
    "title_canon_sha256": "6de9adeceb5efcfff12a7cdcbe40135e214f61785c095c8cb9ea0861746330a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.0996",
    "kind": "arxiv",
    "version": 2
  }
}