Pith Number

pith:RJWBAY6E

pith:2011:RJWBAY6E4GX7V23XBTVVCK6EBT

not attested not anchored not stored refs pending

On variants of conflict-free-coloring for hypergraphs

Ze-Chun Hu, Zhen Cui

arxiv:1107.0138 v5 · 2011-07-01 · math.CO · 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{RJWBAY6E4GX7V23XBTVVCK6EBT}

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	2026-05-18T02:44:07.305948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a6c1063c4e1affaeb770ceb512bc40ce176441e6716e4edc5b99bab4f3b5155

Aliases

arxiv: 1107.0138 · arxiv_version: 1107.0138v5 · doi: 10.48550/arxiv.1107.0138 · pith_short_12: RJWBAY6E4GX7 · pith_short_16: RJWBAY6E4GX7V23X · pith_short_8: RJWBAY6E

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/RJWBAY6E4GX7V23XBTVVCK6EBT \
  | 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: 8a6c1063c4e1affaeb770ceb512bc40ce176441e6716e4edc5b99bab4f3b5155

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57611384bb90d3393694955cc294b4505b08098a43a1e1b97f695d7628e0c5be",
    "cross_cats_sorted": [
      "math.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-07-01T08:15:42Z",
    "title_canon_sha256": "b36fe2d86dffc330db24ef5389d825759978264b96e77754bd6da8fe868b4f45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.0138",
    "kind": "arxiv",
    "version": 5
  }
}