Pith Number

pith:GKIUH2I6

pith:2013:GKIUH2I6QOEGMGOEPHVEJQCXU3

not attested not anchored not stored refs pending

Planar Hypohamiltonian Graphs on 40 Vertices

Brendan D. McKay, Carol T. Zamfirescu, Mohammadreza Jooyandeh, Patric R. J. \"Osterg{\aa}rd, Ville H. Pettersson

arxiv:1302.2698 v4 · 2013-02-12 · math.CO · 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{GKIUH2I6QOEGMGOEPHVEJQCXU3}

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	2026-05-18T01:25:16.468380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

329143e91e83886619c479ea44c057a6c369e4ab4a785f24c5ac89b47382b13b

Aliases

arxiv: 1302.2698 · arxiv_version: 1302.2698v4 · doi: 10.48550/arxiv.1302.2698 · pith_short_12: GKIUH2I6QOEG · pith_short_16: GKIUH2I6QOEGMGOE · pith_short_8: GKIUH2I6

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/GKIUH2I6QOEGMGOEPHVEJQCXU3 \
  | 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: 329143e91e83886619c479ea44c057a6c369e4ab4a785f24c5ac89b47382b13b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1668b6fcc7bffe84af17a9ad6d27ffdbf2331d5761b02ecd4675b367cacbfc41",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-02-12T04:30:16Z",
    "title_canon_sha256": "120d0e00cde6df9333cb4acbb4df57662812792c77415c5aab8d66f4c2d3f32a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2698",
    "kind": "arxiv",
    "version": 4
  }
}