Pith Number

pith:W72WX337

pith:2013:W72WX337OEEERRVFNPPBAKWYRX

not attested not anchored not stored refs pending

Learning Sparsely Used Overcomplete Dictionaries via Alternating Minimization

Alekh Agarwal, Animashree Anandkumar, Praneeth Netrapalli, Prateek Jain

arxiv:1310.7991 v2 · 2013-10-30 · cs.LG · math.OC · 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{W72WX337OEEERRVFNPPBAKWYRX}

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	2026-05-18T02:46:22.716465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7f56bef7f710848c6a56bde102ad88dd9d4d0e8b376a9b50ba2bcdbe23ad273

Aliases

arxiv: 1310.7991 · arxiv_version: 1310.7991v2 · doi: 10.48550/arxiv.1310.7991 · pith_short_12: W72WX337OEEE · pith_short_16: W72WX337OEEERRVF · pith_short_8: W72WX337

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/W72WX337OEEERRVFNPPBAKWYRX \
  | 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: b7f56bef7f710848c6a56bde102ad88dd9d4d0e8b376a9b50ba2bcdbe23ad273

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5719187c9d589dc5c1ab4b9393d7bb9074faa9780b99e7d60d60ae2426840e35",
    "cross_cats_sorted": [
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2013-10-30T01:12:03Z",
    "title_canon_sha256": "779ee96b57b5a911fc85ea8773f63dcee1a8a2a3948d74012de2138004041c04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.7991",
    "kind": "arxiv",
    "version": 2
  }
}