Pith Number

pith:UNC4R4LK

pith:2012:UNC4R4LKJWTMLI5YPKLM2VZIL3

not attested not anchored not stored refs pending

Online Exploration of Polygons with Holes

Frank Hoffmann, Germany), Klaus Kriegel (Freie Universit\"at Berlin, Robert Georges

arxiv:1207.0240 v1 · 2012-07-01 · cs.CG · cs.DS · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UNC4R4LKJWTMLI5YPKLM2VZIL3}

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	2026-05-18T03:51:59.814486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a345c8f16a4da6c5a3b87a96cd57285ece14cd47d5e9894c1cd5c3db6af64020

Aliases

arxiv: 1207.0240 · arxiv_version: 1207.0240v1 · doi: 10.48550/arxiv.1207.0240 · pith_short_12: UNC4R4LKJWTM · pith_short_16: UNC4R4LKJWTMLI5Y · pith_short_8: UNC4R4LK

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/UNC4R4LKJWTMLI5YPKLM2VZIL3 \
  | 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: a345c8f16a4da6c5a3b87a96cd57285ece14cd47d5e9894c1cd5c3db6af64020

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6636d880fb9dd0b050903b9dca20cb61a96f58b2a955a99ffaa6680de733fd5",
    "cross_cats_sorted": [
      "cs.DS",
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2012-07-01T19:27:57Z",
    "title_canon_sha256": "743d507c0113494045f9ca1dd13b519217368595b3877b5ca746e77094585325"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.0240",
    "kind": "arxiv",
    "version": 1
  }
}