Pith Number

pith:6YEMQ3QA

pith:2017:6YEMQ3QAK6ST7PGYJQS2QU44XD

not attested not anchored not stored refs pending

Anagram-free colourings of graph subdivisions

David R. Wood, Tim E. Wilson

arxiv:1708.09571 v1 · 2017-08-31 · 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{6YEMQ3QAK6ST7PGYJQS2QU44XD}

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	2026-05-18T00:36:16.117879Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f608c86e0057a53fbcd84c25a8539cb8d5ed1324a12a16b325e919b1c2841367

Aliases

arxiv: 1708.09571 · arxiv_version: 1708.09571v1 · doi: 10.48550/arxiv.1708.09571 · pith_short_12: 6YEMQ3QAK6ST · pith_short_16: 6YEMQ3QAK6ST7PGY · pith_short_8: 6YEMQ3QA

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/6YEMQ3QAK6ST7PGYJQS2QU44XD \
  | 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: f608c86e0057a53fbcd84c25a8539cb8d5ed1324a12a16b325e919b1c2841367

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93460f584ed65f32ff09b8a1c592499e22fc5532188d673e7025a49d5b1258ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-08-31T05:58:08Z",
    "title_canon_sha256": "8d8e2f72150e2d810a4f18e847606edddfc2d7a230d78b567ac6e4597fbd604d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.09571",
    "kind": "arxiv",
    "version": 1
  }
}