Pith Number

pith:DLUSMSPD

pith:2018:DLUSMSPDBT2ZZYOZHR23MLJBGV

not attested not anchored not stored refs pending

On tight $4$-designs in Hamming association schemes

Alexander Gavrilyuk, Jano\v{s} Vidali, Sho Suda

arxiv:1809.07553 v2 · 2018-09-20 · 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{DLUSMSPDBT2ZZYOZHR23MLJBGV}

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	2026-05-17T23:40:34.403978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ae92649e30cf59ce1d93c75b62d21357bda69140f0383050c7939120d55eab4

Aliases

arxiv: 1809.07553 · arxiv_version: 1809.07553v2 · doi: 10.48550/arxiv.1809.07553 · pith_short_12: DLUSMSPDBT2Z · pith_short_16: DLUSMSPDBT2ZZYOZ · pith_short_8: DLUSMSPD

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/DLUSMSPDBT2ZZYOZHR23MLJBGV \
  | 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: 1ae92649e30cf59ce1d93c75b62d21357bda69140f0383050c7939120d55eab4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5668785c770a3829f1d185c0c673fa1284563f25ce6d55864359c4d6939e4bf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-09-20T10:17:06Z",
    "title_canon_sha256": "79f00818c86f642dcfc25058cf975e76935832297001b421563a6505ea491b44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.07553",
    "kind": "arxiv",
    "version": 2
  }
}