Pith Number

pith:YT3YZKTX

pith:2009:YT3YZKTXZXZFCAWEI5PDHKATQY

not attested not anchored not stored refs pending

Lit-only sigma-game and its dual game

Hau-wen Huang

arxiv:0902.3550 v6 · 2009-02-20 · 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{YT3YZKTXZXZFCAWEI5PDHKATQY}

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	2026-05-18T04:39:39.363371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4f78caa77cdf25102c4475e33a813860dbeba6067ad3bb87270b4f8afa30646

Aliases

arxiv: 0902.3550 · arxiv_version: 0902.3550v6 · doi: 10.48550/arxiv.0902.3550 · pith_short_12: YT3YZKTXZXZF · pith_short_16: YT3YZKTXZXZFCAWE · pith_short_8: YT3YZKTX

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/YT3YZKTXZXZFCAWEI5PDHKATQY \
  | 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: c4f78caa77cdf25102c4475e33a813860dbeba6067ad3bb87270b4f8afa30646

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f46fe3279885dfd839e6eca879eb2175c40b3e03ca49e17c93287e948055cdde",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-02-20T10:40:38Z",
    "title_canon_sha256": "549908b8b5fb616c4a8cc8c5957c78773c3c4270a0d730eaa2d5acd9a12385e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.3550",
    "kind": "arxiv",
    "version": 6
  }
}