Pith Number

pith:ROALM3RN

pith:2018:ROALM3RNTEVI5EKDQ656IICUSV

not attested not anchored not stored refs pending

Induced subgraphs of graphs with large chromatic number. XIII. New brooms

Alex Scott, Paul Seymour

arxiv:1807.03768 v1 · 2018-07-10 · 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{ROALM3RNTEVI5EKDQ656IICUSV}

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	2026-05-18T00:11:00.991079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b80b66e2d992a8e914387bbe420549564f498994e0881a723589e5096117949

Aliases

arxiv: 1807.03768 · arxiv_version: 1807.03768v1 · doi: 10.48550/arxiv.1807.03768 · pith_short_12: ROALM3RNTEVI · pith_short_16: ROALM3RNTEVI5EKD · pith_short_8: ROALM3RN

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/ROALM3RNTEVI5EKDQ656IICUSV \
  | 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: 8b80b66e2d992a8e914387bbe420549564f498994e0881a723589e5096117949

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f91c06750aeeadf5bebc1e922b24b8b602e5819c5fc56d699ea9b2484e563196",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-07-10T17:44:46Z",
    "title_canon_sha256": "73b0c93377bd034928db8655c4eec02a321c806af30df04b98d07941e3d85042"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.03768",
    "kind": "arxiv",
    "version": 1
  }
}