Pith Number

pith:WY3C5V7N

pith:2018:WY3C5V7NZ2SMG224VIMTKTOQGY

not attested not anchored not stored refs pending

Close encounters with the Stirling numbers of the second kind

Khristo N. Boyadzhiev

arxiv:1806.09468 v1 · 2018-06-22 · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WY3C5V7NZ2SMG224VIMTKTOQGY}

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	2026-05-18T00:12:27.178661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6362ed7edcea4c36b5caa19354dd0361e847e9763393748b0c4c4f6a52889e5

Aliases

arxiv: 1806.09468 · arxiv_version: 1806.09468v1 · doi: 10.48550/arxiv.1806.09468 · pith_short_12: WY3C5V7NZ2SM · pith_short_16: WY3C5V7NZ2SMG224 · pith_short_8: WY3C5V7N

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/WY3C5V7NZ2SMG224VIMTKTOQGY \
  | 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: b6362ed7edcea4c36b5caa19354dd0361e847e9763393748b0c4c4f6a52889e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "483de1ba7ecaace22e07307fd0e685cf1b275300be8bfc6d2d3507ad86902332",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2018-06-22T09:01:25Z",
    "title_canon_sha256": "2166aea1ed3e3d7c6773f14124e27ddb9fe8fb6535e24436aaae762b58199fb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.09468",
    "kind": "arxiv",
    "version": 1
  }
}