Pith Number

pith:QOZW3G37

pith:2014:QOZW3G37J6B2ORHQGCVG3AZULW

not attested not anchored not stored refs pending

Hadwiger number of graphs with small chordality

Christophe Paul, Petr A. Golovach, Pim van 't Hof, Pinar Heggernes

arxiv:1406.3812 v1 · 2014-06-15 · cs.DS · 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{QOZW3G37J6B2ORHQGCVG3AZULW}

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	2026-05-18T02:49:39.684670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83b36d9b7f4f83a744f030aa6d83345db5af16a71d9374ad1f3a69e2d550e205

Aliases

arxiv: 1406.3812 · arxiv_version: 1406.3812v1 · doi: 10.48550/arxiv.1406.3812 · pith_short_12: QOZW3G37J6B2 · pith_short_16: QOZW3G37J6B2ORHQ · pith_short_8: QOZW3G37

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/QOZW3G37J6B2ORHQGCVG3AZULW \
  | 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: 83b36d9b7f4f83a744f030aa6d83345db5af16a71d9374ad1f3a69e2d550e205

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ad7590696ae514e1937bb5664d099049451bc02e87abb91b15b8857c4b5809d",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-06-15T13:08:56Z",
    "title_canon_sha256": "7a74e75553f722fbab045c825c201cdae29e9dc56aa526bab816c19100f70dec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.3812",
    "kind": "arxiv",
    "version": 1
  }
}