Pith Number

pith:7UQOEFAZ

pith:2003:7UQOEFAZFKQFKFSC222WHMQWT3

not attested not anchored not stored refs pending

A formula for the number of tilings of an octagon by rhombi

F. Bailly, N. Destainville, R. Mosseri

arxiv:math/0302105 v2 · 2003-02-10 · math.CO · cond-mat.stat-mech

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7UQOEFAZFKQFKFSC222WHMQWT3}

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	2026-05-18T01:05:29.080018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd20e214192aa0551642d6b563b2169efd7fbc213fc31ca2b5fbd94cab3d8a39

Aliases

arxiv: math/0302105 · arxiv_version: math/0302105v2 · doi: 10.48550/arxiv.math/0302105 · pith_short_12: 7UQOEFAZFKQF · pith_short_16: 7UQOEFAZFKQFKFSC · pith_short_8: 7UQOEFAZ

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/7UQOEFAZFKQFKFSC222WHMQWT3 \
  | 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: fd20e214192aa0551642d6b563b2169efd7fbc213fc31ca2b5fbd94cab3d8a39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f32d15866e5e0093b479412cadda00b9394062195427cf39fc63e667025014bb",
    "cross_cats_sorted": [
      "cond-mat.stat-mech"
    ],
    "license": "",
    "primary_cat": "math.CO",
    "submitted_at": "2003-02-10T16:07:06Z",
    "title_canon_sha256": "6bd6dd23f65223f59bef10ae6a9d076faebb7438114e9bc1fd24ab8fe786febf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0302105",
    "kind": "arxiv",
    "version": 2
  }
}