Pith Number

pith:L3YRUSQU

pith:2016:L3YRUSQU4R7ZTZOVVJDNS4UEXU

not attested not anchored not stored refs pending

Colouring squares of claw-free graphs

Lucas Pastor, R\'emi de Joannis de Verclos, Ross J. Kang

arxiv:1609.08645 v3 · 2016-09-27 · 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{L3YRUSQU4R7ZTZOVVJDNS4UEXU}

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	2026-05-18T00:40:07.976141Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ef11a4a14e47f99e5d5aa46d97284bd1ea8b6432a61b39f7d90e5e7edd6b6af

Aliases

arxiv: 1609.08645 · arxiv_version: 1609.08645v3 · doi: 10.48550/arxiv.1609.08645 · pith_short_12: L3YRUSQU4R7Z · pith_short_16: L3YRUSQU4R7ZTZOV · pith_short_8: L3YRUSQU

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/L3YRUSQU4R7ZTZOVVJDNS4UEXU \
  | 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: 5ef11a4a14e47f99e5d5aa46d97284bd1ea8b6432a61b39f7d90e5e7edd6b6af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38251d16f182be836f491e57076b5296f8b2e936841c273949c41795bd9ea72d",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-09-27T20:12:49Z",
    "title_canon_sha256": "dba87900ec86a19454f9383d014c1293350751d4231ac11c3c7f0a3fd01f362d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.08645",
    "kind": "arxiv",
    "version": 3
  }
}