Pith Number

pith:GZ5NG26V

pith:2015:GZ5NG26VYN5FB46J6O2IQLRR62

not attested not anchored not stored refs pending

Sigma clique covering of graphs

Akbar Davoodi, Behnaz Omoomi, Ramin Javadi

arxiv:1503.02380 v1 · 2015-03-09 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GZ5NG26VYN5FB46J6O2IQLRR62}

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	2026-05-18T01:03:23.988466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

367ad36bd5c37a50f3c9f3b4882e31f6a7381d3a6055af42a40eb2a7fcc28631

Aliases

arxiv: 1503.02380 · arxiv_version: 1503.02380v1 · doi: 10.48550/arxiv.1503.02380 · pith_short_12: GZ5NG26VYN5F · pith_short_16: GZ5NG26VYN5FB46J · pith_short_8: GZ5NG26V

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/GZ5NG26VYN5FB46J6O2IQLRR62 \
  | 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: 367ad36bd5c37a50f3c9f3b4882e31f6a7381d3a6055af42a40eb2a7fcc28631

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee6454b0d7516ca0d975566de3b8e4b6c288b7c295d6bdb03e58f515c8f79964",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-03-09T06:47:33Z",
    "title_canon_sha256": "c78fd31f77165c4168e0f3d283246e709305c1c18f671737c2113f66fbcdfe11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02380",
    "kind": "arxiv",
    "version": 1
  }
}