Pith Number

pith:OR4AWECD

pith:2013:OR4AWECDJMZLWWBCJFLRXB44Y2

not attested not anchored not stored refs pending

Linear Clique-Width for Hereditary Classes of Cographs

Nicholas Korpelainen, Robert Brignall, Vincent Vatter

arxiv:1305.0636 v5 · 2013-05-03 · 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{OR4AWECDJMZLWWBCJFLRXB44Y2}

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	2026-05-18T01:22:08.903377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74780b10434b32bb582249571b879cc6a0ea6f12c34c11a7524aa542e9c69cdf

Aliases

arxiv: 1305.0636 · arxiv_version: 1305.0636v5 · doi: 10.48550/arxiv.1305.0636 · pith_short_12: OR4AWECDJMZL · pith_short_16: OR4AWECDJMZLWWBC · pith_short_8: OR4AWECD

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/OR4AWECDJMZLWWBCJFLRXB44Y2 \
  | 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: 74780b10434b32bb582249571b879cc6a0ea6f12c34c11a7524aa542e9c69cdf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c5f37c45ebabc87cdd6a1e9ab92cd4d663bbff5d830fec04c14027072170d2d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-05-03T08:15:39Z",
    "title_canon_sha256": "1afe82791d012ddb44a251efae15ff0ca96d9896fc845de4537338a3652671ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0636",
    "kind": "arxiv",
    "version": 5
  }
}