Pith Number

pith:HQPVBK7A

pith:2018:HQPVBK7ALZUOWGRYHYL6YLM7IO

not attested not anchored not stored refs pending

Intriguing sets in distance regular graphs

Klaus Metsch, Stefaan De Winter

arxiv:1809.02644 v1 · 2018-09-07 · 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{HQPVBK7ALZUOWGRYHYL6YLM7IO}

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	2026-05-18T00:06:15.711907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c1f50abe05e68eb1a383e17ec2d9f4390e10aa16b70ce8bcc93685a355a87c1

Aliases

arxiv: 1809.02644 · arxiv_version: 1809.02644v1 · doi: 10.48550/arxiv.1809.02644 · pith_short_12: HQPVBK7ALZUO · pith_short_16: HQPVBK7ALZUOWGRY · pith_short_8: HQPVBK7A

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/HQPVBK7ALZUOWGRYHYL6YLM7IO \
  | 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: 3c1f50abe05e68eb1a383e17ec2d9f4390e10aa16b70ce8bcc93685a355a87c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5a1d85653da906c321a9452f49219bd66b56c5fa903e6e11cec0ebb62a42805",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-09-07T19:16:13Z",
    "title_canon_sha256": "bbf5e3a1110d7fc1f080da04de2d68334ebc4ff44b3b734bc1e5dc09b71d7ece"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.02644",
    "kind": "arxiv",
    "version": 1
  }
}