Pith Number

pith:WQ6T62HU

pith:2019:WQ6T62HUK2QNA4CXU5SVDA26I5

not attested not anchored not stored refs pending

Steiner systems $S(2, 4, \frac{3^m-1}{2})$ and $2$-designs from ternary linear codes of length $\frac{3^m-1}{2}$

Chunming Tang, Cunsheng Ding, Maosheng Xiong

arxiv:1901.09228 v2 · 2019-01-26 · cs.IT · math.CO · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WQ6T62HUK2QNA4CXU5SVDA26I5}

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	2026-05-17T23:54:38.746781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b43d3f68f456a0d07057a76551835e476aed880073b84e8291bd04d6fd6d872e

Aliases

arxiv: 1901.09228 · arxiv_version: 1901.09228v2 · doi: 10.48550/arxiv.1901.09228 · pith_short_12: WQ6T62HUK2QN · pith_short_16: WQ6T62HUK2QNA4CX · pith_short_8: WQ6T62HU

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/WQ6T62HUK2QNA4CXU5SVDA26I5 \
  | 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: b43d3f68f456a0d07057a76551835e476aed880073b84e8291bd04d6fd6d872e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b85758819ec1b414c20529213c5d75358c88ac8ec326e30a0792d782b5233ea",
    "cross_cats_sorted": [
      "math.CO",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-01-26T15:06:36Z",
    "title_canon_sha256": "90cdc18be70a8aee20c6b7a2dde5d2445d87acf3400590f6d75dc8737bc82b95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09228",
    "kind": "arxiv",
    "version": 2
  }
}