Pith Number

pith:W2ES62S7

pith:2012:W2ES62S76QUAORCHKHQNUCAD2C

not attested not anchored not stored refs pending

Embedding cocyclic D-optimal designs in cocyclic Hadamard matrices

F\'elix Gudiel, Jos\'e-Andr\'es Armario, Mar\'ia-Dolores Frau, V\'ictor \'Alvarez

arxiv:1201.4332 v1 · 2012-01-20 · 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{W2ES62S76QUAORCHKHQNUCAD2C}

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	2026-05-18T04:04:07.393642Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6892f6a5ff42807444751e0da0803d096d4e215cb75bf008ab48e8279bc9727

Aliases

arxiv: 1201.4332 · arxiv_version: 1201.4332v1 · doi: 10.48550/arxiv.1201.4332 · pith_short_12: W2ES62S76QUA · pith_short_16: W2ES62S76QUAORCH · pith_short_8: W2ES62S7

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/W2ES62S76QUAORCHKHQNUCAD2C \
  | 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: b6892f6a5ff42807444751e0da0803d096d4e215cb75bf008ab48e8279bc9727

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33c7957a76449300b08aa7ed0ddd28c82054a0a06a632f52292e627eea583d14",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-01-20T16:25:06Z",
    "title_canon_sha256": "fb87a4143b6bd98949b30e8c96783429a42be0450f7bd2bf87b1d64567f63015"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.4332",
    "kind": "arxiv",
    "version": 1
  }
}