Pith Number

pith:PQMQOPZ5

pith:2013:PQMQOPZ5PVB3OFL4APCYI7OAJW

not attested not anchored not stored refs pending

Algorithmic and Hardness Results for the Colorful Components Problems

Alexandru Popa, Anna Adamaszek

arxiv:1311.1298 v1 · 2013-11-06 · 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{PQMQOPZ5PVB3OFL4APCYI7OAJW}

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	2026-05-18T03:07:53.770071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c19073f3d7d43b7157c03c5847dc04da0b0bcc350c23b9a4bc9c5a02fd48272

Aliases

arxiv: 1311.1298 · arxiv_version: 1311.1298v1 · doi: 10.48550/arxiv.1311.1298 · pith_short_12: PQMQOPZ5PVB3 · pith_short_16: PQMQOPZ5PVB3OFL4 · pith_short_8: PQMQOPZ5

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/PQMQOPZ5PVB3OFL4APCYI7OAJW \
  | 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: 7c19073f3d7d43b7157c03c5847dc04da0b0bcc350c23b9a4bc9c5a02fd48272

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bdce56c813586719c3c04ae266d5f6b100572b68e241410cb321ed06b89ae0b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-11-06T06:57:25Z",
    "title_canon_sha256": "b22d98b7e077b8109199a29a9745f36fae55c6090ccb7ebfaa59eb7e98f5edd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1298",
    "kind": "arxiv",
    "version": 1
  }
}