Pith Number

pith:LJBWHSBW

pith:2017:LJBWHSBWQ55TDDODGNRDSBTWIM

not attested not anchored not stored refs pending

Conflict-Free Coloring of Intersection Graphs of Geometric Objects

Chaya Keller, Shakhar Smorodinsky

arxiv:1704.02018 v1 · 2017-04-06 · 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{LJBWHSBWQ55TDDODGNRDSBTWIM}

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	2026-05-18T00:46:51.016632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a4363c836877b318dc3336239067643073571d6efad0f14ae1f29d3da2f3365

Aliases

arxiv: 1704.02018 · arxiv_version: 1704.02018v1 · doi: 10.48550/arxiv.1704.02018 · pith_short_12: LJBWHSBWQ55T · pith_short_16: LJBWHSBWQ55TDDOD · pith_short_8: LJBWHSBW

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/LJBWHSBWQ55TDDODGNRDSBTWIM \
  | 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: 5a4363c836877b318dc3336239067643073571d6efad0f14ae1f29d3da2f3365

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "137f6c9d42602acb252ccc06e71a85d1f8e402ab98a3761c513b2ca500d51903",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-04-06T20:43:40Z",
    "title_canon_sha256": "fe96c7afc6061d1f96c55c55d37af9c289c7fb72ddb7db3dacb92464244260a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.02018",
    "kind": "arxiv",
    "version": 1
  }
}