Pith Number

pith:SOIRBTUZ

pith:2015:SOIRBTUZJAPJ7YXGJ5N6NI7UPI

not attested not anchored not stored refs pending

Solving a Mathematical Problem in Square War: a Go-like Board Game

Chu Luo

arxiv:1509.09240 v2 · 2015-07-26 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SOIRBTUZJAPJ7YXGJ5N6NI7UPI}

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	2026-05-18T01:25:46.614308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

939110ce99481e9fe2e64f5be6a3f47a04a44f78720b48966ed089dfb908a3a9

Aliases

arxiv: 1509.09240 · arxiv_version: 1509.09240v2 · doi: 10.48550/arxiv.1509.09240 · pith_short_12: SOIRBTUZJAPJ · pith_short_16: SOIRBTUZJAPJ7YXG · pith_short_8: SOIRBTUZ

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/SOIRBTUZJAPJ7YXGJ5N6NI7UPI \
  | 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: 939110ce99481e9fe2e64f5be6a3f47a04a44f78720b48966ed089dfb908a3a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f116087617d36698499d38f356da64badf0f6269c6074c73cbf6472f3239dad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2015-07-26T08:09:24Z",
    "title_canon_sha256": "7e5233d1bd68361d05481cbce8b977a53e7a8f4047c1824715d3f45e412a3b95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.09240",
    "kind": "arxiv",
    "version": 2
  }
}