Pith Number

pith:DS7IY2E6

pith:2016:DS7IY2E6G2EUEN2JZX4GJEXMC5

not attested not anchored not stored refs pending

Block-transitive and point-primitive $2$-$(v,k,2)$ designs with sporadic socle

Shenglin Zhou, Xiaohong Zhang

arxiv:1603.07405 v1 · 2016-03-24 · math.CO · math.GR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DS7IY2E6G2EUEN2JZX4GJEXMC5}

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	2026-05-18T01:18:21.045809Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cbe8c689e3689423749cdf86492ec1774266ec2e45188fb653f7d12f8f4f812

Aliases

arxiv: 1603.07405 · arxiv_version: 1603.07405v1 · doi: 10.48550/arxiv.1603.07405 · pith_short_12: DS7IY2E6G2EU · pith_short_16: DS7IY2E6G2EUEN2J · pith_short_8: DS7IY2E6

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/DS7IY2E6G2EUEN2JZX4GJEXMC5 \
  | 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: 1cbe8c689e3689423749cdf86492ec1774266ec2e45188fb653f7d12f8f4f812

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28428eaa80608e7efe4b955d0506f52e8ae5cd443d61cc926b0bf8fc3ea17c3d",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-03-24T01:19:25Z",
    "title_canon_sha256": "e8fc414d2b25a41378359b8c5f6f42c0cf27ea0335fdfde5f04686b19580abe7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.07405",
    "kind": "arxiv",
    "version": 1
  }
}