Pith Number

pith:6NXXJLTK

pith:2014:6NXXJLTKGWIL7ZJDH6NYDDRYJ6

not attested not anchored not stored refs pending

D-optimal matrices of orders 118, 138, 150, 154 and 174

Dragomir Z. Djokovic, Ilias S. Kotsireas

arxiv:1408.6116 v2 · 2014-08-26 · 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{6NXXJLTKGWIL7ZJDH6NYDDRYJ6}

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	2026-05-18T00:33:07.486972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f36f74ae6a3590bfe5233f9b818e384f8cc9e0fae35e43f83d743106fea1ba1a

Aliases

arxiv: 1408.6116 · arxiv_version: 1408.6116v2 · doi: 10.48550/arxiv.1408.6116 · pith_short_12: 6NXXJLTKGWIL · pith_short_16: 6NXXJLTKGWIL7ZJD · pith_short_8: 6NXXJLTK

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/6NXXJLTKGWIL7ZJDH6NYDDRYJ6 \
  | 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: f36f74ae6a3590bfe5233f9b818e384f8cc9e0fae35e43f83d743106fea1ba1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ca9c620d7001744518d92017664e08d6aed685a407a3d5537f685e306ffb57f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-08-26T13:42:07Z",
    "title_canon_sha256": "7db35f2d103997916210ef2492eeaea83acd667f64e8bd0975c0dad1193b4a0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.6116",
    "kind": "arxiv",
    "version": 2
  }
}