Pith Number

pith:2AMZOHUY

pith:2017:2AMZOHUYV7UPB43TJJ53FCHGDL

not attested not anchored not stored refs pending

Ryuo Nim: A Variant of the classical game of Wythoff Nim

Koki Suetsugu, Masanori Fukui, Ryohei Miyadera, Tomoaki Abuku, Yuki Tokuni, Yushi Nakaya

arxiv:1711.01411 v1 · 2017-11-04 · 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{2AMZOHUYV7UPB43TJJ53FCHGDL}

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	2026-05-18T00:31:17.954331Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d019971e98afe8f0f3734a7bb288e61acff1e8afb80ddc9a73de2d6022998038

Aliases

arxiv: 1711.01411 · arxiv_version: 1711.01411v1 · doi: 10.48550/arxiv.1711.01411 · pith_short_12: 2AMZOHUYV7UP · pith_short_16: 2AMZOHUYV7UPB43T · pith_short_8: 2AMZOHUY

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/2AMZOHUYV7UPB43TJJ53FCHGDL \
  | 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: d019971e98afe8f0f3734a7bb288e61acff1e8afb80ddc9a73de2d6022998038

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c02ac0ff782ce3282c943634568d24b9ae113bc892579e4d2070a1cfcd4b146",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-11-04T08:03:33Z",
    "title_canon_sha256": "126d839e8edf1d21305ac258d6b875af5ce84ab155e3246d3cedc4b816d75db5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.01411",
    "kind": "arxiv",
    "version": 1
  }
}