Pith Number

pith:QROBVQI7

pith:2014:QROBVQI7Y4C2P6ZBKWLRU7TZNW

not attested not anchored not stored refs pending

Solving Graph Coloring Problems with Abstraction and Symmetry

Alice Miller, Avraham Itzhakov, Michael Codish, Michael Frank

arxiv:1409.5189 v3 · 2014-09-18 · cs.AI · 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{QROBVQI7Y4C2P6ZBKWLRU7TZNW}

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	2026-05-18T02:20:19.782188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

845c1ac11fc705a7fb2155971a7e796d906f5bc24f5489e2a7900f7703bd1e9c

Aliases

arxiv: 1409.5189 · arxiv_version: 1409.5189v3 · doi: 10.48550/arxiv.1409.5189 · pith_short_12: QROBVQI7Y4C2 · pith_short_16: QROBVQI7Y4C2P6ZB · pith_short_8: QROBVQI7

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/QROBVQI7Y4C2P6ZBKWLRU7TZNW \
  | 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: 845c1ac11fc705a7fb2155971a7e796d906f5bc24f5489e2a7900f7703bd1e9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aeb9a850e42a26069f4ac4f85a5db746b93d32f4050c4a9518429c1dcea95a1c",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2014-09-18T04:46:44Z",
    "title_canon_sha256": "587d640e0dd8b746bcd0172053801bc587535e0d200101b83b3cb389ca76ca7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.5189",
    "kind": "arxiv",
    "version": 3
  }
}