Pith Number

pith:4HNJSMAK

pith:2015:4HNJSMAK3AU7EXXIUSVDYZDOKV

not attested not anchored not stored refs pending

Sparse PCA via Bipartite Matchings

Alexandros G. Dimakis, Anastasios Kyrillidis, Dimitris Papailiopoulos, Megasthenis Asteris

arxiv:1508.00625 v1 · 2015-08-04 · stat.ML · cs.DS · cs.LG · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4HNJSMAK3AU7EXXIUSVDYZDOKV}

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	2026-05-18T01:35:53.829021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1da99300ad829f25ee8a4aa3c646e5559ceed3963d46e779c69441205740852

Aliases

arxiv: 1508.00625 · arxiv_version: 1508.00625v1 · doi: 10.48550/arxiv.1508.00625 · pith_short_12: 4HNJSMAK3AU7 · pith_short_16: 4HNJSMAK3AU7EXXI · pith_short_8: 4HNJSMAK

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/4HNJSMAK3AU7EXXIUSVDYZDOKV \
  | 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: e1da99300ad829f25ee8a4aa3c646e5559ceed3963d46e779c69441205740852

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f52ed330707d8539bfa2771e38befb2085af96b6e2a73c566883f394a6d56edc",
    "cross_cats_sorted": [
      "cs.DS",
      "cs.LG",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2015-08-04T00:12:35Z",
    "title_canon_sha256": "92970c6e12fdb7a9acf799a634356ad89dcaa03cb813bc2abbd11f04754f9e18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.00625",
    "kind": "arxiv",
    "version": 1
  }
}