Pith Number

pith:2YQE3G3Y

pith:2015:2YQE3G3YBCLRSVWV4NK6HHY4H7

not attested not anchored not stored refs pending

Negaperiodic Golay pairs and Hadamard matrices

D. Z. Djokovic, N. A. Balonin

arxiv:1508.00640 v1 · 2015-08-04 · 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{2YQE3G3YBCLRSVWV4NK6HHY4H7}

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	2026-05-18T01:25:55.057701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6204d9b7808971956d5e355e39f1c3fca50dec9e7cf39695d46514de1196d5b

Aliases

arxiv: 1508.00640 · arxiv_version: 1508.00640v1 · doi: 10.48550/arxiv.1508.00640 · pith_short_12: 2YQE3G3YBCLR · pith_short_16: 2YQE3G3YBCLRSVWV · pith_short_8: 2YQE3G3Y

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/2YQE3G3YBCLRSVWV4NK6HHY4H7 \
  | 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: d6204d9b7808971956d5e355e39f1c3fca50dec9e7cf39695d46514de1196d5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9ef351fa072d24cea7fbde48c247eaf0fc3bb35c8e8c123cd349794e9837266",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-08-04T01:50:30Z",
    "title_canon_sha256": "533670983cf1e518f14d6c57514ade1a0f5d26ae6b573b42111c521dd731f873"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.00640",
    "kind": "arxiv",
    "version": 1
  }
}