Pith Number

pith:7WU74J7D

pith:2022:7WU74J7D22Y7CLSTKSUV2WYIBS

not attested not anchored not stored refs pending

Pure pairs. X. Tournaments and the strong Erdos-Hajnal property

Alex Scott, Maria Chudnovsky, Paul Seymour, Sophie Spirkl

arxiv:2202.13977 v3 · 2022-02-28 · 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{7WU74J7D22Y7CLSTKSUV2WYIBS}

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.

Cited by

1 paper in Pith

Induced subgraph density. IV. New graphs with the Erd\H{o}s-Hajnal property

Receipt and verification

First computed	2026-07-05T06:38:24.617225Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fda9fe27e3d6b1f12e5354a95d5b080c8f4cd55e5e923763604493fb8b56deb7

Aliases

arxiv: 2202.13977 · arxiv_version: 2202.13977v3 · doi: 10.48550/arxiv.2202.13977 · pith_short_12: 7WU74J7D22Y7 · pith_short_16: 7WU74J7D22Y7CLST · pith_short_8: 7WU74J7D

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/7WU74J7D22Y7CLSTKSUV2WYIBS \
  | 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: fda9fe27e3d6b1f12e5354a95d5b080c8f4cd55e5e923763604493fb8b56deb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "869ba818be9b08364359148ff7e05f98b85edcdeea69d5a2a4848547f72d93f0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2022-02-28T17:28:20Z",
    "title_canon_sha256": "6aacbb2e0bbadb7eadc0a8101c422005d1e438cd1303acd46d6f682b68605803"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.13977",
    "kind": "arxiv",
    "version": 3
  }
}