Pith Number

pith:XVYMQJZJ

pith:2013:XVYMQJZJWPF54TRBHMB5GWNGHN

not attested not anchored not stored refs pending

Robust Near-Separable Nonnegative Matrix Factorization Using Linear Optimization

Nicolas Gillis, Robert Luce

arxiv:1302.4385 v2 · 2013-02-18 · stat.ML · 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{XVYMQJZJWPF54TRBHMB5GWNGHN}

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	2026-05-18T02:51:08.653163Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd70c82729b3cbde4e213b03d359a63b5c5957c2ac96bc310e80eb66c9c080de

Aliases

arxiv: 1302.4385 · arxiv_version: 1302.4385v2 · doi: 10.48550/arxiv.1302.4385 · pith_short_12: XVYMQJZJWPF5 · pith_short_16: XVYMQJZJWPF54TRB · pith_short_8: XVYMQJZJ

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/XVYMQJZJWPF54TRBHMB5GWNGHN \
  | 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: bd70c82729b3cbde4e213b03d359a63b5c5957c2ac96bc310e80eb66c9c080de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec7e35397b4c2ec7e2707dd49336dfc5998c1026f043db35cb4d96d865e54251",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2013-02-18T18:45:41Z",
    "title_canon_sha256": "1187c9bd0d5cf445f6ce405ec523c7658561ee4607fa4c6854147a498e0fab88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4385",
    "kind": "arxiv",
    "version": 2
  }
}