Pith Number

pith:7S5EEENH

pith:2015:7S5EEENH3WXKPPNF6KYKYBNDRQ

not attested not anchored not stored refs pending

Well-quasi-ordering does not imply bounded clique-width

Igor Razgon, Vadim Lozin, Viktor Zamaraev

arxiv:1503.00571 v1 · 2015-03-02 · cs.DM · 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{7S5EEENH3WXKPPNF6KYKYBNDRQ}

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	2026-05-18T02:25:54.224944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcba4211a7ddaea7bda5f2b0ac05a38c3c964fe297275b5b1b4425e8cd3478f5

Aliases

arxiv: 1503.00571 · arxiv_version: 1503.00571v1 · doi: 10.48550/arxiv.1503.00571 · pith_short_12: 7S5EEENH3WXK · pith_short_16: 7S5EEENH3WXKPPNF · pith_short_8: 7S5EEENH

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/7S5EEENH3WXKPPNF6KYKYBNDRQ \
  | 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: fcba4211a7ddaea7bda5f2b0ac05a38c3c964fe297275b5b1b4425e8cd3478f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92c58f242f6fdf6401f25dde8280dfff18f8dbf19084cd0631c655ec009590e0",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-03-02T15:29:11Z",
    "title_canon_sha256": "194516f11b19ab26b56cea772ca4c86d2c10b037cad0ea782f0b5abda5a38fa6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.00571",
    "kind": "arxiv",
    "version": 1
  }
}