Pith Number

pith:IYSK7V5A

pith:2014:IYSK7V5APFWP7XAXY5UVOPSEC6

not attested not anchored not stored refs pending

Online Square-into-Square Packing

Hella-Franziska Hoffmann, S\'andor P. Fekete

arxiv:1403.5665 v2 · 2014-03-22 · cs.DM · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IYSK7V5APFWP7XAXY5UVOPSEC6}

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	2026-05-18T00:53:40.804349Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4624afd7a0796cffdc17c769573e44178a36a0d55c1ddf9c2368fb43417d031f

Aliases

arxiv: 1403.5665 · arxiv_version: 1403.5665v2 · doi: 10.48550/arxiv.1403.5665 · pith_short_12: IYSK7V5APFWP · pith_short_16: IYSK7V5APFWP7XAX · pith_short_8: IYSK7V5A

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/IYSK7V5APFWP7XAXY5UVOPSEC6 \
  | 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: 4624afd7a0796cffdc17c769573e44178a36a0d55c1ddf9c2368fb43417d031f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4198c33a56608b3b865f7f0870171919fcb06ca12b64b323f654d4245c0b353",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2014-03-22T14:18:18Z",
    "title_canon_sha256": "c3e831ffe05acd64e45efd0eea03115d9e881d72c77ef74c6da6a86e948b1ca4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5665",
    "kind": "arxiv",
    "version": 2
  }
}