Pith Number

pith:TXOQNGSU

pith:2016:TXOQNGSUXLDSDHSQ2TN5VTSUCX

not attested not anchored not stored refs pending

Hadamard matrices with few distinct types

A. Mohammadian, B. Tayfeh-Rezaie

arxiv:1610.02839 v1 · 2016-10-10 · 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{TXOQNGSUXLDSDHSQ2TN5VTSUCX}

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	2026-05-18T01:02:50.588780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ddd069a54bac7219e50d4dbdace5415c844919397ce0640bf9964aa80c929cb

Aliases

arxiv: 1610.02839 · arxiv_version: 1610.02839v1 · doi: 10.48550/arxiv.1610.02839 · pith_short_12: TXOQNGSUXLDS · pith_short_16: TXOQNGSUXLDSDHSQ · pith_short_8: TXOQNGSU

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/TXOQNGSUXLDSDHSQ2TN5VTSUCX \
  | 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: 9ddd069a54bac7219e50d4dbdace5415c844919397ce0640bf9964aa80c929cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92c3d3afb601303b52c97eaa1204e011e4cc4e7cf9c50caeab3f731635fd7233",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-10-10T10:36:38Z",
    "title_canon_sha256": "266c36495a2e11922ec0e10aae34a6367ffb182d84e18711603ed8d27015894e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.02839",
    "kind": "arxiv",
    "version": 1
  }
}