Pith Number

pith:BRROE25E

pith:2013:BRROE25EZIQW4HYIR6H5OBGDHT

not attested not anchored not stored refs pending

An update on domineering on rectangular boards

Gabriel C. Drummond-Cole

arxiv:1305.3257 v2 · 2013-05-14 · math.CO · cs.GT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BRROE25EZIQW4HYIR6H5OBGDHT}

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	2026-05-18T03:25:36.258741Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c62e26ba4ca216e1f088f8fd704c33cd8cfb887039a63cd2623e0d43f8898b7

Aliases

arxiv: 1305.3257 · arxiv_version: 1305.3257v2 · doi: 10.48550/arxiv.1305.3257 · pith_short_12: BRROE25EZIQW · pith_short_16: BRROE25EZIQW4HYI · pith_short_8: BRROE25E

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/BRROE25EZIQW4HYIR6H5OBGDHT \
  | 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: 0c62e26ba4ca216e1f088f8fd704c33cd8cfb887039a63cd2623e0d43f8898b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb51319c53e0d989caa8adad152c986d0f151dc919dfa654b73a2bfaef0a7faf",
    "cross_cats_sorted": [
      "cs.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-05-14T19:15:03Z",
    "title_canon_sha256": "4466fd9f4eff1bd612888f75ab320c9bfdf2ce6dfc9fae17889a5aaf2e5b6d9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.3257",
    "kind": "arxiv",
    "version": 2
  }
}