Pith Number

pith:35JGFWT3

pith:2014:35JGFWT3D742GARQZO64ES7WXS

not attested not anchored not stored refs pending

Tight convex relaxations for sparse matrix factorization

Emile Richard, Guillaume Obozinski (LIGM), Jean-Philippe Vert (CBIO)

arxiv:1407.5158 v2 · 2014-07-19 · stat.ML · cs.LG · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{35JGFWT3D742GARQZO64ES7WXS}

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	2026-05-18T02:32:07.336755Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df5262da7b1ff9a30230cbbdc24bf6bcbeaa397b886b420e4f85d7e0271629c1

Aliases

arxiv: 1407.5158 · arxiv_version: 1407.5158v2 · doi: 10.48550/arxiv.1407.5158 · pith_short_12: 35JGFWT3D742 · pith_short_16: 35JGFWT3D742GARQ · pith_short_8: 35JGFWT3

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/35JGFWT3D742GARQZO64ES7WXS \
  | 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: df5262da7b1ff9a30230cbbdc24bf6bcbeaa397b886b420e4f85d7e0271629c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5dc484b33d93fe914545ab384975259bf49514b9ff28ea01e82868ee916be681",
    "cross_cats_sorted": [
      "cs.LG",
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2014-07-19T07:04:08Z",
    "title_canon_sha256": "575ba6afdf679b83143f767a4d0930c0ec6548b591d581b9a2e6b349aa79ff3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.5158",
    "kind": "arxiv",
    "version": 2
  }
}