Pith Number

pith:MC4S75QN

pith:2011:MC4S75QNDTY6L4EOYTTH6LVOLS

not attested not anchored not stored refs pending

Colouring Edges with many Colours in Cycles

Jaroslav Nesetril (KAM), Patrice Ossona De Mendez (CAMS), Xuding Zhu

arxiv:1108.1616 v1 · 2011-08-08 · 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{MC4S75QNDTY6L4EOYTTH6LVOLS}

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	2026-05-18T04:16:00.569193Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60b92ff60d1cf1e5f08ec4e67f2eae5cb930c686f29a2dafe45e9f42a01c613b

Aliases

arxiv: 1108.1616 · arxiv_version: 1108.1616v1 · doi: 10.48550/arxiv.1108.1616 · pith_short_12: MC4S75QNDTY6 · pith_short_16: MC4S75QNDTY6L4EO · pith_short_8: MC4S75QN

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/MC4S75QNDTY6L4EOYTTH6LVOLS \
  | 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: 60b92ff60d1cf1e5f08ec4e67f2eae5cb930c686f29a2dafe45e9f42a01c613b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98009ed62f2f0e8bee623a2acaabacd72c63ca6dc0bfb76ed3a723c3ce573bcb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-08-08T07:32:16Z",
    "title_canon_sha256": "09b29f9b5a4ed4459b48d50caaadab43c0ad30645864a76b6a3a31063a8ad9f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.1616",
    "kind": "arxiv",
    "version": 1
  }
}