Pith Number

pith:RKBJ6357

pith:2015:RKBJ6357TN6FNOHMSJKPXCKNTK

not attested not anchored not stored refs pending

Symmetric Hadamard matrices of order 116 and 172 exist

Dragomir Z. Djokovic, Ilias S. Kotsireas, Olivia Di Matteo

arxiv:1503.04226 v2 · 2015-03-13 · 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{RKBJ6357TN6FNOHMSJKPXCKNTK}

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	2026-05-18T00:36:04.210027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a829f6fbf9b7c56b8ec9254fb894d9aa581d63faa4688221048e551ad767e58

Aliases

arxiv: 1503.04226 · arxiv_version: 1503.04226v2 · doi: 10.48550/arxiv.1503.04226 · pith_short_12: RKBJ6357TN6F · pith_short_16: RKBJ6357TN6FNOHM · pith_short_8: RKBJ6357

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/RKBJ6357TN6FNOHMSJKPXCKNTK \
  | 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: 8a829f6fbf9b7c56b8ec9254fb894d9aa581d63faa4688221048e551ad767e58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c022954bff072ae47491622101b2f055b3166d50539a185b2c0f6f33c9870264",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-03-13T21:22:02Z",
    "title_canon_sha256": "b1ca8f335317a0f7f0d4326269e982e52bb53285feb117fde8792e154a4f62fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.04226",
    "kind": "arxiv",
    "version": 2
  }
}