Pith Number

pith:UB2JPQBC

pith:2019:UB2JPQBCNZWLFLULNTSJXGHBFY

not attested not anchored not stored refs pending

Non-Hamiltonian 3-Regular Graphs with Arbitrary Girth

Michael Haythorpe

arxiv:1902.10344 v1 · 2019-02-27 · 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{UB2JPQBCNZWLFLULNTSJXGHBFY}

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	2026-05-17T23:52:31.134960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a07497c0226e6cb2ae8b6ce49b98e12e20711d490cfbd33335db9d430de66e5a

Aliases

arxiv: 1902.10344 · arxiv_version: 1902.10344v1 · doi: 10.48550/arxiv.1902.10344 · pith_short_12: UB2JPQBCNZWL · pith_short_16: UB2JPQBCNZWLFLUL · pith_short_8: UB2JPQBC

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/UB2JPQBCNZWLFLULNTSJXGHBFY \
  | 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: a07497c0226e6cb2ae8b6ce49b98e12e20711d490cfbd33335db9d430de66e5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03a8bd74c79f4f2d12c0ed9cd66d23cc2bacd5c7efcda13c5fada38bb722929a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-02-27T06:12:08Z",
    "title_canon_sha256": "9f3d2798c5eb314a759199c02baa6b5f8558666d4a6ec589c22b301ea0a853b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.10344",
    "kind": "arxiv",
    "version": 1
  }
}