Pith Number

pith:7OBX63TN

pith:2010:7OBX63TNZGCPHVQ476GO45GURV

not attested not anchored not stored refs pending

Polynomial-time sortable stacks of burnt pancakes

Anthony Labarre, Josef Cibulka

arxiv:1010.0219 v1 · 2010-10-01 · cs.DS · 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{7OBX63TNZGCPHVQ476GO45GURV}

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	2026-05-18T04:30:03.699179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb837f6e6dc984f3d61cff8cee74d48d4e20d562ff0d1fa1e5c4406323417e02

Aliases

arxiv: 1010.0219 · arxiv_version: 1010.0219v1 · doi: 10.48550/arxiv.1010.0219 · pith_short_12: 7OBX63TNZGCP · pith_short_16: 7OBX63TNZGCPHVQ4 · pith_short_8: 7OBX63TN

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/7OBX63TNZGCPHVQ476GO45GURV \
  | 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: fb837f6e6dc984f3d61cff8cee74d48d4e20d562ff0d1fa1e5c4406323417e02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c93f903479a8c32336473deca7da453ab31a4515401122ad1435a02041d5a9f",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2010-10-01T17:22:31Z",
    "title_canon_sha256": "9040fd5c00cd6cfc170710b9c465989be52200787421d9d11e1da816169f57e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.0219",
    "kind": "arxiv",
    "version": 1
  }
}