Pith Number

pith:AQRJ5SAU

pith:2015:AQRJ5SAUAXVFMVS3OCH6XRGKH3

not attested not anchored not stored refs pending

Coloring Graphs having Few Colorings over Path Decompositions

Andreas Bj\"orklund

arxiv:1504.03670 v3 · 2015-04-14 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AQRJ5SAUAXVFMVS3OCH6XRGKH3}

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	2026-05-18T01:37:07.381946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

04229ec81405ea56565b708febc4ca3eea853f1dece40e4138084ed307789347

Aliases

arxiv: 1504.03670 · arxiv_version: 1504.03670v3 · doi: 10.48550/arxiv.1504.03670 · pith_short_12: AQRJ5SAUAXVF · pith_short_16: AQRJ5SAUAXVFMVS3 · pith_short_8: AQRJ5SAU

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/AQRJ5SAUAXVFMVS3OCH6XRGKH3 \
  | 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: 04229ec81405ea56565b708febc4ca3eea853f1dece40e4138084ed307789347

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1e1cfb04ed41587c718e3ab9c58d07fe2d4f7ef2d25a1cb50b8ef6fbf305aed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-04-14T19:44:39Z",
    "title_canon_sha256": "7370abbc29599ed522a9d68aecc48cd4434a35f4c43cb713d795d69d89214c90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03670",
    "kind": "arxiv",
    "version": 3
  }
}