Pith Number

pith:CIFP5T7A

pith:2018:CIFP5T7A4YPFBG6JK6JNJFNFH4

not attested not anchored not stored refs pending

Balancedly splittable Hadamard matrices

Hadi Kharaghani, Sho Suda

arxiv:1806.00165 v2 · 2018-06-01 · 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{CIFP5T7A4YPFBG6JK6JNJFNFH4}

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	2026-05-18T00:02:59.738419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

120afecfe0e61e509bc95792d495a53f2922b70021f92b2d270e38d51a0b862e

Aliases

arxiv: 1806.00165 · arxiv_version: 1806.00165v2 · doi: 10.48550/arxiv.1806.00165 · pith_short_12: CIFP5T7A4YPF · pith_short_16: CIFP5T7A4YPFBG6J · pith_short_8: CIFP5T7A

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/CIFP5T7A4YPFBG6JK6JNJFNFH4 \
  | 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: 120afecfe0e61e509bc95792d495a53f2922b70021f92b2d270e38d51a0b862e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b100049866547857415d95edd1489f36d433b2bc28a1e149f1392886b5137d52",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-06-01T01:57:48Z",
    "title_canon_sha256": "b7bb915848a46f93888cecf38ce03037a8ecec31f324c8a5c610af49d842a982"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.00165",
    "kind": "arxiv",
    "version": 2
  }
}