Pith Number

pith:B3MLSOXR

pith:2015:B3MLSOXRALWYN6ROCF5XBQDDPF

not attested not anchored not stored refs pending

Recognition and Complexity of Point Visibility Graphs

Jean Cardinal, Udo Hoffmann

arxiv:1503.07082 v2 · 2015-03-24 · cs.CG · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B3MLSOXRALWYN6ROCF5XBQDDPF}

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	2026-05-17T23:54:57.209977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ed8b93af102ed86fa2e117b70c06379436c33a707781d6b7a1b3986251badfa

Aliases

arxiv: 1503.07082 · arxiv_version: 1503.07082v2 · doi: 10.48550/arxiv.1503.07082 · pith_short_12: B3MLSOXRALWY · pith_short_16: B3MLSOXRALWYN6RO · pith_short_8: B3MLSOXR

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/B3MLSOXRALWYN6ROCF5XBQDDPF \
  | 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: 0ed8b93af102ed86fa2e117b70c06379436c33a707781d6b7a1b3986251badfa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9918a0300e4e7782e5416e13f1d8b1d122bcda47f29109d8169758ec4dca4aea",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2015-03-24T15:37:28Z",
    "title_canon_sha256": "9756cd85da9bfec0c4fb1f4b5a3ec50c0d45cc0d390bb612c1473a81ad66e4de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.07082",
    "kind": "arxiv",
    "version": 2
  }
}