Pith Number

pith:OGIDMPN3

pith:2009:OGIDMPN3Q6SFYRFNXOAXKUE5GP

not attested not anchored not stored refs pending

The powers of smooth words over arbitrary 2-letter alphabets

Yunbao Huang

arxiv:0904.0562 v2 · 2009-04-03 · 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{OGIDMPN3Q6SFYRFNXOAXKUE5GP}

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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.

Cited by

1 paper in Pith

The complexity of finite smooth words over binary alphabets

Receipt and verification

First computed	2026-05-18T04:15:59.719389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7190363dbb87a45c44adbb8175509d33ffd4895c4a09034ee1dd43e00e4531ef

Aliases

arxiv: 0904.0562 · arxiv_version: 0904.0562v2 · doi: 10.48550/arxiv.0904.0562 · pith_short_12: OGIDMPN3Q6SF · pith_short_16: OGIDMPN3Q6SFYRFN · pith_short_8: OGIDMPN3

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/OGIDMPN3Q6SFYRFNXOAXKUE5GP \
  | 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: 7190363dbb87a45c44adbb8175509d33ffd4895c4a09034ee1dd43e00e4531ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "643230857b4815490547786a26ed97237968c1cebb1d67c687e2cf73af6e51ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-04-03T12:34:25Z",
    "title_canon_sha256": "67665312f05a7c2d5677e254076816420760e3bcbd9aa32519ced75795ce4fc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0562",
    "kind": "arxiv",
    "version": 2
  }
}