Pith Number

pith:SRYVQJEN

pith:2009:SRYVQJENX36QTHHC3YWJ3BVUNX

not attested not anchored not stored refs pending

The maximum independent sets of de Bruijn graphs of diameter 3

Dustin A. Cartwright, Enrique A. Tobis, Maria Angelica Cueto

arxiv:0905.3820 v2 · 2009-05-23 · 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{SRYVQJENX36QTHHC3YWJ3BVUNX}

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	2026-05-18T04:40:10.546752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

947158248dbefd099ce2de2c9d86b46df3ac948b8885ca3ca9a12f23a17dbd66

Aliases

arxiv: 0905.3820 · arxiv_version: 0905.3820v2 · doi: 10.48550/arxiv.0905.3820 · pith_short_12: SRYVQJENX36Q · pith_short_16: SRYVQJENX36QTHHC · pith_short_8: SRYVQJEN

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/SRYVQJENX36QTHHC3YWJ3BVUNX \
  | 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: 947158248dbefd099ce2de2c9d86b46df3ac948b8885ca3ca9a12f23a17dbd66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1c322a29277fb93c1b7acad0b95ec52f606743f78b5544a09b900fc39cf88bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-05-23T18:28:35Z",
    "title_canon_sha256": "871c8e1c6fc417226697bab1fac1af25f88920f5be2eddf3ffcace61aa339ec3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3820",
    "kind": "arxiv",
    "version": 2
  }
}