Pith Number

pith:EM2JHDH3

pith:2022:EM2JHDH3SVVILTR4DYWSWZ7MIL

not attested not anchored not stored refs pending

Clumsy Packing of Polyominoes in Finite Space

Emma Miller, Mitchel O'Connor, Nathan Shank

arxiv:2203.06675 v1 · 2022-03-13 · math.CO · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EM2JHDH3SVVILTR4DYWSWZ7MIL}

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	2026-07-05T04:04:53.576136Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2334938cfb956a85ce3c1e2d2b67ec42c5ea72c6e4d3d1cc6dc68b63f399fc6e

Aliases

arxiv: 2203.06675 · arxiv_version: 2203.06675v1 · doi: 10.48550/arxiv.2203.06675 · pith_short_12: EM2JHDH3SVVI · pith_short_16: EM2JHDH3SVVILTR4 · pith_short_8: EM2JHDH3

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/EM2JHDH3SVVILTR4DYWSWZ7MIL \
  | 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: 2334938cfb956a85ce3c1e2d2b67ec42c5ea72c6e4d3d1cc6dc68b63f399fc6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1a985a68bb38835d28129d857f2af8cd69e292bf539eee314257b941dd2d06e",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2022-03-13T15:09:36Z",
    "title_canon_sha256": "2d19435c24703dedb25f527fa03d6f06bc5cf236b42f56623365e906d51f9f8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.06675",
    "kind": "arxiv",
    "version": 1
  }
}