Pith Number

pith:MXT3C6EA

pith:2010:MXT3C6EAR5QHWCLXFWJ2XRZUI7

not attested not anchored not stored refs pending

Hadamard matrices from base sequences: An example

Dragomir Z. Djokovic

arxiv:1002.4008 v1 · 2010-02-21 · 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{MXT3C6EAR5QHWCLXFWJ2XRZUI7}

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	2026-05-18T04:20:03.926247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65e7b178808f607b09772d93abc73447cab34e341d7e370618b456fbf173acce

Aliases

arxiv: 1002.4008 · arxiv_version: 1002.4008v1 · doi: 10.48550/arxiv.1002.4008 · pith_short_12: MXT3C6EAR5QH · pith_short_16: MXT3C6EAR5QHWCLX · pith_short_8: MXT3C6EA

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/MXT3C6EAR5QHWCLXFWJ2XRZUI7 \
  | 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: 65e7b178808f607b09772d93abc73447cab34e341d7e370618b456fbf173acce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b7ec795347afcd89bb36cffe78dd1d244987857dcd1575b52c4917787a4d790",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-02-21T19:56:44Z",
    "title_canon_sha256": "ebe3841ce3ea09bf2ccd73222ba625b0719bb164e847a3a4417f819ef1276421"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.4008",
    "kind": "arxiv",
    "version": 1
  }
}