Pith Number

pith:CWPBQJKI

pith:2016:CWPBQJKIDMZUXYEEY2OCJZDY45

not attested not anchored not stored refs pending

Simple t-designs: A recursive construction for arbitrary t

Tran van Trung

arxiv:1602.06751 v1 · 2016-02-22 · 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{CWPBQJKIDMZUXYEEY2OCJZDY45}

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	2026-05-18T01:20:13.216277Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

159e1825481b334be084c69c24e478e74cd90189ad86810ae14ee571ceacc708

Aliases

arxiv: 1602.06751 · arxiv_version: 1602.06751v1 · doi: 10.48550/arxiv.1602.06751 · pith_short_12: CWPBQJKIDMZU · pith_short_16: CWPBQJKIDMZUXYEE · pith_short_8: CWPBQJKI

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/CWPBQJKIDMZUXYEEY2OCJZDY45 \
  | 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: 159e1825481b334be084c69c24e478e74cd90189ad86810ae14ee571ceacc708

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b7b6205565db09046c7c00600039b47960e9b450fd9cff5f46dd44e3040eb45",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-02-22T12:41:45Z",
    "title_canon_sha256": "ee3ee5629db1384e01fbd7249e7deeec29b338e4a0cf13cc87ab04b25f307c36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.06751",
    "kind": "arxiv",
    "version": 1
  }
}