Pith Number

pith:4BKYTXTE

pith:2013:4BKYTXTEICLSFRGWSPN4MRQAIS

not attested not anchored not stored refs pending

Supervised Classification Using Sparse Fisher's LDA

Irina Gaynanova, James G. Booth, Martin T. Wells

arxiv:1301.4976 v2 · 2013-01-21 · stat.ML · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4BKYTXTEICLSFRGWSPN4MRQAIS}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:42:46.754013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e05589de64409722c4d693dbc64600448af4bdda8306778cdd95378ed091e079

Aliases

arxiv: 1301.4976 · arxiv_version: 1301.4976v2 · doi: 10.48550/arxiv.1301.4976 · pith_short_12: 4BKYTXTEICLS · pith_short_16: 4BKYTXTEICLSFRGW · pith_short_8: 4BKYTXTE

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/4BKYTXTEICLSFRGWSPN4MRQAIS \
  | 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: e05589de64409722c4d693dbc64600448af4bdda8306778cdd95378ed091e079

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7110bda0e8e1e4d194643e59e2c4121eebd781ab278838befc5ed5d897930cdd",
    "cross_cats_sorted": [
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2013-01-21T20:35:43Z",
    "title_canon_sha256": "6245504377a73db73bb7a4437d34b117f02d714cf570571945db6811209e144c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.4976",
    "kind": "arxiv",
    "version": 2
  }
}