Pith Number

pith:S6CESG45

pith:2012:S6CESG45L2AWIJWXQKABSNJF2W

not attested not anchored not stored refs pending

Techniques for Solving Sudoku Puzzles

Eric C. Chi, Kenneth Lange

arxiv:1203.2295 v3 · 2012-03-11 · math.OC · cs.DS · stat.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{S6CESG45L2AWIJWXQKABSNJF2W}

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	2026-05-18T03:25:35.167383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9784491b9d5e816426d78280193525d5b1e977b88a962613e5086f5baca918f1

Aliases

arxiv: 1203.2295 · arxiv_version: 1203.2295v3 · doi: 10.48550/arxiv.1203.2295 · pith_short_12: S6CESG45L2AW · pith_short_16: S6CESG45L2AWIJWX · pith_short_8: S6CESG45

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/S6CESG45L2AWIJWXQKABSNJF2W \
  | 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: 9784491b9d5e816426d78280193525d5b1e977b88a962613e5086f5baca918f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3974f3f742348e4aaf1a2b8833a771b940b51f28bb4ceb224791763ac1a4973a",
    "cross_cats_sorted": [
      "cs.DS",
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-03-11T00:12:05Z",
    "title_canon_sha256": "be30a044432093dfd29dc1855699cd529a77224c43bfa1d7b96147ee55b17b04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2295",
    "kind": "arxiv",
    "version": 3
  }
}