Pith Number

pith:USGQDYA5

pith:2016:USGQDYA54REDNLKQY4KTNWF4AM

not attested not anchored not stored refs pending

New families of strongly regular graphs

S.G. Barwick, Tim Penttila, Wen-Ai Jackson

arxiv:1606.05380 v1 · 2016-06-16 · 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{USGQDYA54REDNLKQY4KTNWF4AM}

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	2026-05-18T01:12:20.247175Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a48d01e01de44836ad50c71536d8bc03214fc33414987128bf3b6dd9c98ffdfe

Aliases

arxiv: 1606.05380 · arxiv_version: 1606.05380v1 · doi: 10.48550/arxiv.1606.05380 · pith_short_12: USGQDYA54RED · pith_short_16: USGQDYA54REDNLKQ · pith_short_8: USGQDYA5

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/USGQDYA54REDNLKQY4KTNWF4AM \
  | 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: a48d01e01de44836ad50c71536d8bc03214fc33414987128bf3b6dd9c98ffdfe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05c297b0bc71fa7239ed3c4058b502af559492e11fbe4b931877e9ff3e46517b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-06-16T23:03:21Z",
    "title_canon_sha256": "932a29d239f567fa734ee82a2883678f36133e7af17f3c6f1c919c452623ee9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.05380",
    "kind": "arxiv",
    "version": 1
  }
}