Pith Number

pith:WSTF6OPV

pith:2018:WSTF6OPVTAG6J2NAX4A5H3HDQX

not attested not anchored not stored refs pending

Caterpillars in Erd\H{o}s-Hajnal

Anita Liebenau, Marcin Pilipczuk, Paul Seymour, Sophie Spirkl

arxiv:1810.00811 v1 · 2018-10-01 · math.CO · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WSTF6OPVTAG6J2NAX4A5H3HDQX}

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	2026-05-18T00:04:24.772239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4a65f39f5980de4e9a0bf01d3ece385eddda927280e3ded7e622080e0833555

Aliases

arxiv: 1810.00811 · arxiv_version: 1810.00811v1 · doi: 10.48550/arxiv.1810.00811 · pith_short_12: WSTF6OPVTAG6 · pith_short_16: WSTF6OPVTAG6J2NA · pith_short_8: WSTF6OPV

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/WSTF6OPVTAG6J2NAX4A5H3HDQX \
  | 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: b4a65f39f5980de4e9a0bf01d3ece385eddda927280e3ded7e622080e0833555

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "125d2292a1124b9f1d4b3adbf2156dbd9bd1351eb9a79f4c34107a4e02763c76",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-10-01T16:48:52Z",
    "title_canon_sha256": "2301e71e6b6c96eabce7b63f88eb0497d4c918c9c4a977b26c612027c6022443"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.00811",
    "kind": "arxiv",
    "version": 1
  }
}