Pith Number

pith:5BORYY6L

pith:2021:5BORYY6LBAUGWMTOX7MEOR2CJX

not attested not anchored not stored refs pending

Connected greedy colourings of perfect graphs and other classes: the good, the bad and the ugly

Aur\'elie Lagoutte, Caroline Brosse, Florent Foucaud, Laurent Beaudou, Lucas Pastor, Oscar Defrain, Vincent Limouzy

arxiv:2110.14003 v5 · 2021-10-26 · cs.DM · 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{5BORYY6LBAUGWMTOX7MEOR2CJX}

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	2026-07-05T08:03:24.352917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e85d1c63cb08286b326ebfd84747424dc3a72780cbe3905f6a6b2f3879948753

Aliases

arxiv: 2110.14003 · arxiv_version: 2110.14003v5 · doi: 10.48550/arxiv.2110.14003 · pith_short_12: 5BORYY6LBAUG · pith_short_16: 5BORYY6LBAUGWMTO · pith_short_8: 5BORYY6L

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/5BORYY6LBAUGWMTOX7MEOR2CJX \
  | 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: e85d1c63cb08286b326ebfd84747424dc3a72780cbe3905f6a6b2f3879948753

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41f291405cc3b198ffd22c449988cda322068a1a84ec82ab35b733143430fb04",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2021-10-26T20:14:31Z",
    "title_canon_sha256": "6ff1eebfcb7702f39579982c985f4d7e3d45df3c21e2ba6ff18f7dc634018716"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.14003",
    "kind": "arxiv",
    "version": 5
  }
}