Pith Number

pith:7NA6QBGW

pith:2014:7NA6QBGW3QUB7PREMRVML24XKQ

not attested not anchored not stored refs pending

Non-existence of (76,30,8,14) strongly regular graph

A. Prymak, A. V. Bondarenko, D. Radchenko

arxiv:1410.6748 v3 · 2014-10-24 · 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{7NA6QBGW3QUB7PREMRVML24XKQ}

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	2026-05-18T00:46:08.524461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb41e804d6dc281fbe24646ac5eb9754378f23ae792a0ce3b91cb6874aaa94c2

Aliases

arxiv: 1410.6748 · arxiv_version: 1410.6748v3 · doi: 10.48550/arxiv.1410.6748 · pith_short_12: 7NA6QBGW3QUB · pith_short_16: 7NA6QBGW3QUB7PRE · pith_short_8: 7NA6QBGW

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/7NA6QBGW3QUB7PREMRVML24XKQ \
  | 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: fb41e804d6dc281fbe24646ac5eb9754378f23ae792a0ce3b91cb6874aaa94c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "675e85e0de8f2af420f27b176fc57c141a5c7323b3cb473d48a46fd7dc34f23a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-10-24T17:25:50Z",
    "title_canon_sha256": "aa6e09a35443f5e4da3eee30edfb4e0e33fbe7272e097205c845bc1a9addb2d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.6748",
    "kind": "arxiv",
    "version": 3
  }
}