Pith Number

pith:DGNUFQRL

pith:2009:DGNUFQRLS6KTP6DALNMMDHQOML

not attested not anchored not stored refs pending

On planar regular graphs degree three without Hamiltonian cycles

Emanuels Grinbergs (IMCS)

arxiv:0908.2563 v1 · 2009-08-18 · 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{DGNUFQRLS6KTP6DALNMMDHQOML}

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.

Cited by

1 paper in Pith

Complexity and Geometry of Sampling Connected Graph Partitions

Receipt and verification

First computed	2026-07-04T15:48:06.060508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

199b42c22b979537f8605b58c19e0e62dc17bf8dca565b0d8ac6455bc3c12aa7

Aliases

arxiv: 0908.2563 · arxiv_version: 0908.2563v1 · doi: 10.48550/arxiv.0908.2563 · pith_short_12: DGNUFQRLS6KT · pith_short_16: DGNUFQRLS6KTP6DA · pith_short_8: DGNUFQRL

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/DGNUFQRLS6KTP6DALNMMDHQOML \
  | 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: 199b42c22b979537f8605b58c19e0e62dc17bf8dca565b0d8ac6455bc3c12aa7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "463ddaf14aeebaaa73b3e0c257cf12bd5afa8bee55bc768c5b363143d90c5524",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-08-18T13:01:52Z",
    "title_canon_sha256": "de31d5242bccb8c87338a317ddd1e57cd7935dd4624c9dff6e98e900d257085b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2563",
    "kind": "arxiv",
    "version": 1
  }
}