Pith Number

pith:JUCWCBJP

pith:2013:JUCWCBJPU7NN64PT6BP6MVGZ3M

not attested not anchored not stored refs pending

Cayley transform and the Kronecker product of Hermitian matrices

Ajda Fo\v{s}ner, Willi-Hans Steeb, Yorick Hardy

arxiv:1305.1015 v2 · 2013-05-05 · math.FA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JUCWCBJPU7NN64PT6BP6MVGZ3M}

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	2026-05-17T23:58:55.008213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d0561052fa7dadf71f3f05fe654d9db30b309a09a0c3f8328538310cbbf133f

Aliases

arxiv: 1305.1015 · arxiv_version: 1305.1015v2 · doi: 10.48550/arxiv.1305.1015 · pith_short_12: JUCWCBJPU7NN · pith_short_16: JUCWCBJPU7NN64PT · pith_short_8: JUCWCBJP

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/JUCWCBJPU7NN64PT6BP6MVGZ3M \
  | 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: 4d0561052fa7dadf71f3f05fe654d9db30b309a09a0c3f8328538310cbbf133f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26d0228e3581e3bdc8b2a9bab968777bffcaaf3371513b3a7a0c9228765a0c14",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2013-05-05T14:33:56Z",
    "title_canon_sha256": "ea5776d36dde663db1e934bd5d1320179ee5e285081bbf27d337e5fcc208960a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.1015",
    "kind": "arxiv",
    "version": 2
  }
}