Pith Number

pith:GLYP42L4

pith:2013:GLYP42L4RY36AEZ2RH5YT7ZMMC

not attested not anchored not stored refs pending

A quick construction of mutually orthogonal sudoku squares

John Lorch

arxiv:1303.0411 v1 · 2013-03-02 · 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{GLYP42L4RY36AEZ2RH5YT7ZMMC}

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	2026-05-18T03:31:56.165397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32f0fe697c8e37e0133a89fb89ff2c60bdc3d5b8920c4e1d66f549ea2d28f7ad

Aliases

arxiv: 1303.0411 · arxiv_version: 1303.0411v1 · doi: 10.48550/arxiv.1303.0411 · pith_short_12: GLYP42L4RY36 · pith_short_16: GLYP42L4RY36AEZ2 · pith_short_8: GLYP42L4

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/GLYP42L4RY36AEZ2RH5YT7ZMMC \
  | 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: 32f0fe697c8e37e0133a89fb89ff2c60bdc3d5b8920c4e1d66f549ea2d28f7ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68d4c132236c12ee93bdf63347ef306b7cd9fd40c18fde5fcc4bee9d6520d7be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-03-02T18:14:11Z",
    "title_canon_sha256": "f07f4272d45e57ef5daf0de94afa52c1b05360bd5268bfec30fbc5c29c510c31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.0411",
    "kind": "arxiv",
    "version": 1
  }
}