Pith Number

pith:C4Q6DXM3

pith:2015:C4Q6DXM3ZREGPCN5M2GO42H44G

not attested not anchored not stored refs pending

Asymmetric Latin squares, Steiner triple systems, and edge-parallelisms

Peter J. Cameron

arxiv:1507.02190 v1 · 2015-07-08 · 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{C4Q6DXM3ZREGPCN5M2GO42H44G}

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	2026-05-18T01:37:08.430693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1721e1dd9bcc486789bd668cee68fce1b822fa9d7e7632cbb5ce777fa83662bb

Aliases

arxiv: 1507.02190 · arxiv_version: 1507.02190v1 · doi: 10.48550/arxiv.1507.02190 · pith_short_12: C4Q6DXM3ZREG · pith_short_16: C4Q6DXM3ZREGPCN5 · pith_short_8: C4Q6DXM3

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/C4Q6DXM3ZREGPCN5M2GO42H44G \
  | 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: 1721e1dd9bcc486789bd668cee68fce1b822fa9d7e7632cbb5ce777fa83662bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70b83989c38044fd678b01c9143ddabb5a4ae038ca18edbf06c977e6594c1389",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-07-08T15:08:04Z",
    "title_canon_sha256": "c0623781e37a48e189f4e5a7b849e51b94c51698aa697234a0eb51c760ec8819"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.02190",
    "kind": "arxiv",
    "version": 1
  }
}