Pith Number

pith:4JUHGJOJ

pith:2015:4JUHGJOJOBTZ5JAQWPDWWT2BOT

not attested not anchored not stored refs pending

Sparse Fisher's discriminant analysis with thresholded linear constraints

Ruiyan Luo, Xin Qi

arxiv:1508.01113 v1 · 2015-08-05 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4JUHGJOJOBTZ5JAQWPDWWT2BOT}

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	2026-05-18T01:35:44.035841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2687325c970679ea410b3c76b4f4174d85317019a4ca1f4bfeb666f6e62b716

Aliases

arxiv: 1508.01113 · arxiv_version: 1508.01113v1 · doi: 10.48550/arxiv.1508.01113 · pith_short_12: 4JUHGJOJOBTZ · pith_short_16: 4JUHGJOJOBTZ5JAQ · pith_short_8: 4JUHGJOJ

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/4JUHGJOJOBTZ5JAQWPDWWT2BOT \
  | 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: e2687325c970679ea410b3c76b4f4174d85317019a4ca1f4bfeb666f6e62b716

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a238d699591e654e42543bcd8c83a8d3175bb03c07396e4ceb3db33ed1b5bbb2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2015-08-05T15:55:58Z",
    "title_canon_sha256": "7e5a684636564c3223b965eaa6687e1ae3c8744317f46fda91074c06bd4d0b9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.01113",
    "kind": "arxiv",
    "version": 1
  }
}