Pith Number

pith:ZVY7GAQU

pith:2016:ZVY7GAQUREQWICQNM7BRFN2TZF

not attested not anchored not stored refs pending

Reducing the generalised Sudoku problem to the Hamiltonian cycle problem

Michael Haythorpe

arxiv:1603.03019 v1 · 2016-03-08 · cs.DS · cs.DM · 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{ZVY7GAQUREQWICQNM7BRFN2TZF}

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	2026-05-18T01:19:19.344120Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd71f302148921640a0d67c312b753c96b47fe68aebc95d8729a00231a60f072

Aliases

arxiv: 1603.03019 · arxiv_version: 1603.03019v1 · doi: 10.48550/arxiv.1603.03019 · pith_short_12: ZVY7GAQUREQW · pith_short_16: ZVY7GAQUREQWICQN · pith_short_8: ZVY7GAQU

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/ZVY7GAQUREQWICQNM7BRFN2TZF \
  | 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: cd71f302148921640a0d67c312b753c96b47fe68aebc95d8729a00231a60f072

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86f784e453ac7f4fd0bd072143b0929324e7318ac15c5e7e7196b1e32a9ac734",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-03-08T06:34:03Z",
    "title_canon_sha256": "70682e46b82298e9acd874a6839b926e492e3e0066a74c82576431b65b5bee33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.03019",
    "kind": "arxiv",
    "version": 1
  }
}