Pith Number

pith:3WSVB53N

pith:2015:3WSVB53NFVLRPFL2T356CLQRUI

not attested not anchored not stored refs pending

A stronger bound for the strong chromatic index

Felix Joos, Henning Bruhn

arxiv:1504.02583 v1 · 2015-04-10 · math.CO · cs.DM · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3WSVB53NFVLRPFL2T356CLQRUI}

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.

Cited by

1 paper in Pith

Coloring, List Coloring, and Painting Squares of Graphs (and other related problems)

Receipt and verification

First computed	2026-05-18T02:19:07.301522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dda550f76d2d5717957a9efbe12e11a2340543d8bbec0ac5fae8032a8fce61f7

Aliases

arxiv: 1504.02583 · arxiv_version: 1504.02583v1 · doi: 10.48550/arxiv.1504.02583 · pith_short_12: 3WSVB53NFVLR · pith_short_16: 3WSVB53NFVLRPFL2 · pith_short_8: 3WSVB53N

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/3WSVB53NFVLRPFL2T356CLQRUI \
  | 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: dda550f76d2d5717957a9efbe12e11a2340543d8bbec0ac5fae8032a8fce61f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5a90cdefd28ff4e12a6a20f86dec0137188e7495ca88427953cba14f86fc792",
    "cross_cats_sorted": [
      "cs.DM",
      "math.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-04-10T08:23:31Z",
    "title_canon_sha256": "ddea428875216d6f26e70d23e92ee66744ad7bd092897a87924d5fd4b095a099"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02583",
    "kind": "arxiv",
    "version": 1
  }
}