Pith Number

pith:JLX7UMGY

pith:2014:JLX7UMGYNIXW5DL4B2LNS2I54W

not attested not anchored not stored refs pending

Group-sparse Matrix Recovery

M\'ario A. T. Figueiredo, Xiangrong Zeng

arxiv:1402.5077 v1 · 2014-02-20 · cs.LG · cs.CV · 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{JLX7UMGYNIXW5DL4B2LNS2I54W}

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	2026-05-18T02:58:31.239257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4aeffa30d86a2f6e8d7c0e96d9691de5bf7b0a8af486ce4d45e8e4924162de9e

Aliases

arxiv: 1402.5077 · arxiv_version: 1402.5077v1 · doi: 10.48550/arxiv.1402.5077 · pith_short_12: JLX7UMGYNIXW · pith_short_16: JLX7UMGYNIXW5DL4 · pith_short_8: JLX7UMGY

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/JLX7UMGYNIXW5DL4B2LNS2I54W \
  | 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: 4aeffa30d86a2f6e8d7c0e96d9691de5bf7b0a8af486ce4d45e8e4924162de9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea76e7078737b63938e621475da26bd18038d6cfc91d1b1c6bf9bb0b86ff5534",
    "cross_cats_sorted": [
      "cs.CV",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2014-02-20T17:08:34Z",
    "title_canon_sha256": "5312ee714900abf067d1e9d2304b114fe04afba89eea4a89cd28612815f1b136"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.5077",
    "kind": "arxiv",
    "version": 1
  }
}