Pith Number

pith:2QOLCFPG

pith:2015:2QOLCFPGSJ5GTJBS2HQKGXTH5C

not attested not anchored not stored refs pending

Labeling outerplanar graphs with maximum degree three

Sanming Zhou, Xiangwen Li

arxiv:1503.06924 v1 · 2015-03-24 · 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{2QOLCFPGSJ5GTJBS2HQKGXTH5C}

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	2026-05-18T02:20:29.768362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d41cb115e6927a69a432d1e0a35e67e881c894b062f0f822dc57ea0ee70efaf2

Aliases

arxiv: 1503.06924 · arxiv_version: 1503.06924v1 · doi: 10.48550/arxiv.1503.06924 · pith_short_12: 2QOLCFPGSJ5G · pith_short_16: 2QOLCFPGSJ5GTJBS · pith_short_8: 2QOLCFPG

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/2QOLCFPGSJ5GTJBS2HQKGXTH5C \
  | 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: d41cb115e6927a69a432d1e0a35e67e881c894b062f0f822dc57ea0ee70efaf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e94f05ad7b723f092024c9cc9a9cf7db9f163f65125ac649f315ec500d6c4ae9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-03-24T06:13:16Z",
    "title_canon_sha256": "567e296f3a04119c1a6bf4b89cec7b194cae799b2974eda341fccc31d20f46c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.06924",
    "kind": "arxiv",
    "version": 1
  }
}