Pith Number

pith:OO42YLK5

pith:2012:OO42YLK5ZNA6D6XPKZUGVIX4AS

not attested not anchored not stored refs pending

Factoring nonnegative matrices with linear programs

Benjamin Recht, Christopher Re, Joel A. Tropp, Victor Bittorf

arxiv:1206.1270 v2 · 2012-06-06 · math.OC · cs.LG · 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{OO42YLK5ZNA6D6XPKZUGVIX4AS}

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	2026-05-18T03:34:38.164447Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73b9ac2d5dcb41e1faef56686aa2fc04b405f2727f7dfe23be6782e5169d8414

Aliases

arxiv: 1206.1270 · arxiv_version: 1206.1270v2 · doi: 10.48550/arxiv.1206.1270 · pith_short_12: OO42YLK5ZNA6 · pith_short_16: OO42YLK5ZNA6D6XP · pith_short_8: OO42YLK5

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/OO42YLK5ZNA6D6XPKZUGVIX4AS \
  | 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: 73b9ac2d5dcb41e1faef56686aa2fc04b405f2727f7dfe23be6782e5169d8414

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b2addb9255ea7dbb161095a2ce5b867912f62bf3b1d5ec371212874537b26c3",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-06-06T16:42:27Z",
    "title_canon_sha256": "18acddefd39860bb8f288ac03ad838cb39b56204c6547cef8073ccfe1135c6fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.1270",
    "kind": "arxiv",
    "version": 2
  }
}