Pith Number

pith:FCV2LITA

pith:2010:FCV2LITAB3S6WSYH56UHFCHDAH

not attested not anchored not stored refs pending

Quantum learning: optimal classification of qubit states

Madalin Guta, Wojciech Kotlowski

arxiv:1004.2468 v1 · 2010-04-14 · quant-ph · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FCV2LITAB3S6WSYH56UHFCHDAH}

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	2026-05-18T04:19:33.542950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28aba5a2600ee5eb4b07efa87288e301c3c702310f1173ecd844e9061c7ad423

Aliases

arxiv: 1004.2468 · arxiv_version: 1004.2468v1 · doi: 10.48550/arxiv.1004.2468 · pith_short_12: FCV2LITAB3S6 · pith_short_16: FCV2LITAB3S6WSYH · pith_short_8: FCV2LITA

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/FCV2LITAB3S6WSYH56UHFCHDAH \
  | 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: 28aba5a2600ee5eb4b07efa87288e301c3c702310f1173ecd844e9061c7ad423

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "759060f84f6f09fdfb6a0de537cc58271b91b68fdefb1fa7f0998665eddb718a",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-04-14T18:30:19Z",
    "title_canon_sha256": "897db4f6aa9ec448752abf498b9b1541f6f501fbfcaa8bf1f0473624c2874f8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2468",
    "kind": "arxiv",
    "version": 1
  }
}