Pith Number

pith:ZQQJWR3P

pith:2017:ZQQJWR3PXXPKBGJAZN6I6WIV43

not attested not anchored not stored refs pending

Quantum ensembles of quantum classifiers

Francesco Petruccione, Maria Schuld

arxiv:1704.02146 v1 · 2017-04-07 · quant-ph · cs.LG · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZQQJWR3PXXPKBGJAZN6I6WIV43}

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	2026-05-18T00:46:50.602883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc209b476fbddea09920cb7c8f5915e6d4ff1933d2956cff410e1ad9518ec65b

Aliases

arxiv: 1704.02146 · arxiv_version: 1704.02146v1 · doi: 10.48550/arxiv.1704.02146 · pith_short_12: ZQQJWR3PXXPK · pith_short_16: ZQQJWR3PXXPKBGJA · pith_short_8: ZQQJWR3P

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/ZQQJWR3PXXPKBGJAZN6I6WIV43 \
  | 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: cc209b476fbddea09920cb7c8f5915e6d4ff1933d2956cff410e1ad9518ec65b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "362c924cff0db2c81a274879f71518c9d9d979553a0f745eed1e89c13f3af629",
    "cross_cats_sorted": [
      "cs.LG",
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-04-07T09:12:39Z",
    "title_canon_sha256": "82092faeb1932dd21afbc00723a79ca40465ac55507fd58ffa51bcf46baf6cd1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.02146",
    "kind": "arxiv",
    "version": 1
  }
}