Pith Number

pith:DE2YALYU

pith:2013:DE2YALYUGHJPWNLV7YS4WI5B3E

not attested not anchored not stored refs pending

A new look at an old construction: constructing (simple) 3-designs from resolvable 2-designs

Colleen M. Swanson, Douglas R. Stinson, Tran van Trung

arxiv:1310.0992 v1 · 2013-10-03 · 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{DE2YALYUGHJPWNLV7YS4WI5B3E}

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	2026-05-18T03:11:24.801392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1935802f1431d2fb3575fe25cb23a1d918613219ec316e2c46fdd99955118254

Aliases

arxiv: 1310.0992 · arxiv_version: 1310.0992v1 · doi: 10.48550/arxiv.1310.0992 · pith_short_12: DE2YALYUGHJP · pith_short_16: DE2YALYUGHJPWNLV · pith_short_8: DE2YALYU

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/DE2YALYUGHJPWNLV7YS4WI5B3E \
  | 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: 1935802f1431d2fb3575fe25cb23a1d918613219ec316e2c46fdd99955118254

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "777f46e7b13d31c62274bba8c215cc96efbbb0312416d4d065dbc09c0d582347",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-10-03T14:27:18Z",
    "title_canon_sha256": "0c902d1cd27fcef4ff35b22ec6bf7fb027af2f8762b86eec56eee2c5299c7c71"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.0992",
    "kind": "arxiv",
    "version": 1
  }
}