Pith Number

pith:JQ5CIRXF

pith:2011:JQ5CIRXFWKXTIKYKIYAHSECZEZ

not attested not anchored not stored refs pending

A linear-time algorithm for the strong chromatic index of Halin graphs

Ton Kloks, Yue-Li Wang

arxiv:1109.3934 v1 · 2011-09-19 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JQ5CIRXFWKXTIKYKIYAHSECZEZ}

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	2026-05-18T04:12:45.537607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c3a2446e5b2af342b0a46007910592673f3d58dd6ebc6d8b5fc99e55f38ae91

Aliases

arxiv: 1109.3934 · arxiv_version: 1109.3934v1 · doi: 10.48550/arxiv.1109.3934 · pith_short_12: JQ5CIRXFWKXT · pith_short_16: JQ5CIRXFWKXTIKYK · pith_short_8: JQ5CIRXF

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/JQ5CIRXFWKXTIKYKIYAHSECZEZ \
  | 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: 4c3a2446e5b2af342b0a46007910592673f3d58dd6ebc6d8b5fc99e55f38ae91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "146b91c1742c0c407c1db743f717b09d6115331b6fb525a579fec82cadfc8e60",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-09-19T03:14:22Z",
    "title_canon_sha256": "aeb6bb03a8131921cd8ba7305310f8b4e6d3583864641a4801df950019005d99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.3934",
    "kind": "arxiv",
    "version": 1
  }
}