Pith Number

pith:FZ6E223Z

pith:2008:FZ6E223ZYN3WASYRAZEUZU4CVQ

not attested not anchored not stored refs pending

Exact generating function for 2-convex polygons

A. J. Guttmann, I. Jensen, W. R. G. James

arxiv:0805.1259 v1 · 2008-05-09 · 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{FZ6E223ZYN3WASYRAZEUZU4CVQ}

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	2026-05-18T02:15:52.960465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e7c4d6b79c377604b1106494cd382ac15690b7c6e9c4d26dfe9f7d7d9060fe5

Aliases

arxiv: 0805.1259 · arxiv_version: 0805.1259v1 · doi: 10.48550/arxiv.0805.1259 · pith_short_12: FZ6E223ZYN3W · pith_short_16: FZ6E223ZYN3WASYR · pith_short_8: FZ6E223Z

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/FZ6E223ZYN3WASYRAZEUZU4CVQ \
  | 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: 2e7c4d6b79c377604b1106494cd382ac15690b7c6e9c4d26dfe9f7d7d9060fe5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6eac0a1a92fbb8365522cc501d897fe2dc161f39fec9d69d78c0526937c3e6d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2008-05-09T01:28:10Z",
    "title_canon_sha256": "1efe81ea52a41dfd22785f07608b7427dcc513764aff4c5829715738a2a06cf0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.1259",
    "kind": "arxiv",
    "version": 1
  }
}