Pith Number

pith:QQKAQKLY

pith:2019:QQKAQKLYDH6UJNNX6PZDTD4RXU

not attested not anchored not stored refs pending

The perimeter generating function for nondirected diagonally convex polyominoes

Svjetlan Fereti\'c

arxiv:1907.09409 v1 · 2019-07-12 · 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{QQKAQKLYDH6UJNNX6PZDTD4RXU}

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	2026-05-17T23:39:59.288119Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

841408297819fd44b5b7f3f2398f91bd09acde288b4e8a7a09a5c52995e61efb

Aliases

arxiv: 1907.09409 · arxiv_version: 1907.09409v1 · doi: 10.48550/arxiv.1907.09409 · pith_short_12: QQKAQKLYDH6U · pith_short_16: QQKAQKLYDH6UJNNX · pith_short_8: QQKAQKLY

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/QQKAQKLYDH6UJNNX6PZDTD4RXU \
  | 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: 841408297819fd44b5b7f3f2398f91bd09acde288b4e8a7a09a5c52995e61efb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b3c6605304f5e072db8b6b923677e7c48b81f8d51e4d1c6f65f5837241b9ef1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-07-12T21:03:25Z",
    "title_canon_sha256": "4c0f135de709638fe6facd89d4b58e6d26b3b63eeb2ec176870d749bd10367d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09409",
    "kind": "arxiv",
    "version": 1
  }
}