Pith Number

pith:KXKW25V4

pith:2016:KXKW25V4LSJKD2K3ZCA5PO56II

not attested not anchored not stored refs pending

The $(n,m,k,\lambda)$-Strong External Difference Family with $m \geq 5$ Exists

Jiejing Wen, Keqin Feng, Minghui Yang

arxiv:1612.09495 v1 · 2016-12-30 · cs.IT · 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{KXKW25V4LSJKD2K3ZCA5PO56II}

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	2026-05-18T00:53:41.369771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55d56d76bc5c92a1e95bc881d7bbbe421b461741baee2303d4505099e7b9ec9b

Aliases

arxiv: 1612.09495 · arxiv_version: 1612.09495v1 · doi: 10.48550/arxiv.1612.09495 · pith_short_12: KXKW25V4LSJK · pith_short_16: KXKW25V4LSJKD2K3 · pith_short_8: KXKW25V4

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/KXKW25V4LSJKD2K3ZCA5PO56II \
  | 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: 55d56d76bc5c92a1e95bc881d7bbbe421b461741baee2303d4505099e7b9ec9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13bacb1e7b0271a39af635d1fe6a81e85df699bd931e4fd326f30fc0509c1163",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2016-12-30T14:04:31Z",
    "title_canon_sha256": "5ab510340c96fd203d4712970cc74f759621d8203b9943637731da88d4fca981"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.09495",
    "kind": "arxiv",
    "version": 1
  }
}