Pith Number

pith:7N447RBG

pith:2011:7N447RBGZIHMNCMVNRR533KTPW

not attested not anchored not stored refs pending

Using graphs to find the best block designs

Peter J. Cameron, R. A. Bailey

arxiv:1111.3768 v1 · 2011-11-16 · math.ST · math.CO · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7N447RBGZIHMNCMVNRR533KTPW}

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	2026-05-18T04:08:13.090631Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb79cfc426ca0ec689956c63dded537db4abe2caa248fa0bf9aa7a78e3997cbb

Aliases

arxiv: 1111.3768 · arxiv_version: 1111.3768v1 · doi: 10.48550/arxiv.1111.3768 · pith_short_12: 7N447RBGZIHM · pith_short_16: 7N447RBGZIHMNCMV · pith_short_8: 7N447RBG

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/7N447RBGZIHMNCMVNRR533KTPW \
  | 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: fb79cfc426ca0ec689956c63dded537db4abe2caa248fa0bf9aa7a78e3997cbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63b20ab40601b8af3ed6484de57c409d5a69ec57db6ac48e7e56bc45e971b73c",
    "cross_cats_sorted": [
      "math.CO",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2011-11-16T11:37:23Z",
    "title_canon_sha256": "2cd027a624d85e17203e3aaf483adcbc4963b14fe09bede299ae16688eb77a03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3768",
    "kind": "arxiv",
    "version": 1
  }
}