Pith Number

pith:5V7KPAPB

pith:2010:5V7KPAPB2P3ZWK3YEFO5R7F3IA

not attested not anchored not stored refs pending

A Pair of Disjoint 3-GDDs of type g^t u^1

Junling Zhou, Yanxun Chang, Yeow Meng Chee

arxiv:1008.4408 v1 · 2010-08-26 · 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{5V7KPAPB2P3ZWK3YEFO5R7F3IA}

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	2026-05-18T04:41:45.362918Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed7ea781e1d3f79b2b78215dd8fcbb4010b7ef97759fe391f6612ac9160eb33b

Aliases

arxiv: 1008.4408 · arxiv_version: 1008.4408v1 · doi: 10.48550/arxiv.1008.4408 · pith_short_12: 5V7KPAPB2P3Z · pith_short_16: 5V7KPAPB2P3ZWK3Y · pith_short_8: 5V7KPAPB

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/5V7KPAPB2P3ZWK3YEFO5R7F3IA \
  | 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: ed7ea781e1d3f79b2b78215dd8fcbb4010b7ef97759fe391f6612ac9160eb33b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ed956826e179a97376b87fe09faa6c453c589bfc96e2950a71567722368d281",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-08-26T00:00:22Z",
    "title_canon_sha256": "7fb34340171c0cb6661695971a1b95dfa73aa2659ebac9b7d19733fa99604adf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.4408",
    "kind": "arxiv",
    "version": 1
  }
}