Pith Number

pith:OKCFGVGM

pith:2011:OKCFGVGMMPSDHPKP62K7TTI5YH

not attested not anchored not stored refs pending

Structures and lower bounds for binary covering arrays

Dong Yeol Oh, Hyun Kwang Kim, Soohak Choi

arxiv:1111.0587 v1 · 2011-11-02 · 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{OKCFGVGMMPSDHPKP62K7TTI5YH}

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	2026-05-18T04:09:44.647649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72845354cc63e433bd4ff695f9cd1dc1c039a83f7901fb40d79b00e15f186231

Aliases

arxiv: 1111.0587 · arxiv_version: 1111.0587v1 · doi: 10.48550/arxiv.1111.0587 · pith_short_12: OKCFGVGMMPSD · pith_short_16: OKCFGVGMMPSDHPKP · pith_short_8: OKCFGVGM

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/OKCFGVGMMPSDHPKP62K7TTI5YH \
  | 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: 72845354cc63e433bd4ff695f9cd1dc1c039a83f7901fb40d79b00e15f186231

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cec1376076d2ffb9c911b94d51767f3cb09e34c837b60b397d62c4d9d6b9648",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-11-02T18:03:12Z",
    "title_canon_sha256": "593037d9e2c42d4d11947aa74369944a10ca6a560d3aae738ba974b566f8c7d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.0587",
    "kind": "arxiv",
    "version": 1
  }
}