Pith Number

pith:4V2IDGBB

pith:2011:4V2IDGBBQT6BCDJRCWZ3VETY2H

not attested not anchored not stored refs pending

The complexity of determining the rainbow vertex-connection of graphs

Lily Chen, Xueliang Li, Yongtang Shi

arxiv:1101.3126 v1 · 2011-01-17 · math.CO · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4V2IDGBBQT6BCDJRCWZ3VETY2H}

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	2026-05-18T04:31:30.454038Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e57481982184fc110d3115b3ba9278d1f0a6092452ddf56587cdc44b63d779c0

Aliases

arxiv: 1101.3126 · arxiv_version: 1101.3126v1 · doi: 10.48550/arxiv.1101.3126 · pith_short_12: 4V2IDGBBQT6B · pith_short_16: 4V2IDGBBQT6BCDJR · pith_short_8: 4V2IDGBB

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/4V2IDGBBQT6BCDJRCWZ3VETY2H \
  | 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: e57481982184fc110d3115b3ba9278d1f0a6092452ddf56587cdc44b63d779c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9aed681f690298d964b4e21c570afda90b5cfc24ecaf5fca3a03cc43484b2d69",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-01-17T05:44:18Z",
    "title_canon_sha256": "49de11e077efc115a677e902951db7a4e70be14010bb9d35526f24af3db09ea0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.3126",
    "kind": "arxiv",
    "version": 1
  }
}