Pith Number

pith:6WQFQIZB

pith:2021:6WQFQIZBAUOZBKD3JVSGK6I6BD

not attested not anchored not stored refs pending

Structural risk minimization for quantum linear classifiers

Casper Gyurik, Dyon van Vreumingen, Vedran Dunjko

arxiv:2105.05566 v3 · 2021-05-12 · quant-ph · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6WQFQIZBAUOZBKD3JVSGK6I6BD}

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	2026-07-05T05:33:43.479260Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5a0582321051d90a87b4d6465791e08edc4f97cd716c185823d85ef2f9d9a6f

Aliases

arxiv: 2105.05566 · arxiv_version: 2105.05566v3 · doi: 10.48550/arxiv.2105.05566 · pith_short_12: 6WQFQIZBAUOZ · pith_short_16: 6WQFQIZBAUOZBKD3 · pith_short_8: 6WQFQIZB

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/6WQFQIZBAUOZBKD3JVSGK6I6BD \
  | 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: f5a0582321051d90a87b4d6465791e08edc4f97cd716c185823d85ef2f9d9a6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ca508dedb6643a1de5e23e71ffa0f161ea70b1f4d39c692a68330502579f1b1",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-05-12T10:39:55Z",
    "title_canon_sha256": "31151d4cb1a3a709b24161db0d54bc1185d5988fa6390ae231f0f2cba62de0d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.05566",
    "kind": "arxiv",
    "version": 3
  }
}