Pith Number

pith:X5KSIQIZ

pith:2014:X5KSIQIZKQC3R7I5GWYFKYE3PZ

not attested not anchored not stored refs pending

A rigidity property of ribbon L-shaped n-ominoes and generalizations

Viorel Nitica

arxiv:1406.0823 v1 · 2014-06-03 · 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{X5KSIQIZKQC3R7I5GWYFKYE3PZ}

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	2026-05-18T02:50:32.751063Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf552441195405b8fd1d35b055609b7e55ea5cf200af915146240f20b0a10956

Aliases

arxiv: 1406.0823 · arxiv_version: 1406.0823v1 · doi: 10.48550/arxiv.1406.0823 · pith_short_12: X5KSIQIZKQC3 · pith_short_16: X5KSIQIZKQC3R7I5 · pith_short_8: X5KSIQIZ

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/X5KSIQIZKQC3R7I5GWYFKYE3PZ \
  | 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: bf552441195405b8fd1d35b055609b7e55ea5cf200af915146240f20b0a10956

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ad1653db28c8e895a1ba8d05cba2660b104875eb54ae0c4f39b0ecb838877cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-06-03T19:31:51Z",
    "title_canon_sha256": "5ae751fc066285ea74cd93a836589202c19b54e68fc60cabf8eb027d549e2153"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.0823",
    "kind": "arxiv",
    "version": 1
  }
}