Pith Number

pith:QFFCNBB2

pith:2011:QFFCNBB2JA7LTIJTU5NRGVOELF

not attested not anchored not stored refs pending

Some new operations on Zt x Z2,2-cocyclic Hadamard matrices

Felix Gudiel, Maria Belen Guemes, Victor Alvarez

arxiv:1112.4300 v2 · 2011-12-19 · 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{QFFCNBB2JA7LTIJTU5NRGVOELF}

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	2026-05-18T02:50:10.847682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

814a26843a483eb9a133a75b1355c4595b2247c76523474578a8f4bdfc0f0a4f

Aliases

arxiv: 1112.4300 · arxiv_version: 1112.4300v2 · doi: 10.48550/arxiv.1112.4300 · pith_short_12: QFFCNBB2JA7L · pith_short_16: QFFCNBB2JA7LTIJT · pith_short_8: QFFCNBB2

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/QFFCNBB2JA7LTIJTU5NRGVOELF \
  | 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: 814a26843a483eb9a133a75b1355c4595b2247c76523474578a8f4bdfc0f0a4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f111559f8c3fb6e6c066575b13a436aff901252eb149d7db06a70e41874c94d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-12-19T10:55:51Z",
    "title_canon_sha256": "e21a98c6f93547f6d6a947fec9861373f55137002af088b93002809e869ab7f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.4300",
    "kind": "arxiv",
    "version": 2
  }
}