Pith Number

pith:WCIWYJGL

pith:2013:WCIWYJGLXKYBOXYOBYV273ZNRT

not attested not anchored not stored refs pending

Semidefinite Programming Based Preconditioning for More Robust Near-Separable Nonnegative Matrix Factorization

Nicolas Gillis, Stephen A. Vavasis

arxiv:1310.2273 v2 · 2013-10-08 · stat.ML · cs.LG · 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{WCIWYJGLXKYBOXYOBYV273ZNRT}

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	2026-05-18T02:19:50.840979Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0916c24cbbab0175f0e0e2bafef2d8cf801ea75ddec949fd86fb17434c8f3f9

Aliases

arxiv: 1310.2273 · arxiv_version: 1310.2273v2 · doi: 10.48550/arxiv.1310.2273 · pith_short_12: WCIWYJGLXKYB · pith_short_16: WCIWYJGLXKYBOXYO · pith_short_8: WCIWYJGL

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/WCIWYJGLXKYBOXYOBYV273ZNRT \
  | 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: b0916c24cbbab0175f0e0e2bafef2d8cf801ea75ddec949fd86fb17434c8f3f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39fad8ba74ed952ae46639bda242b6a301951060463fcfc56318423369dc41e7",
    "cross_cats_sorted": [
      "cs.LG",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2013-10-08T20:30:38Z",
    "title_canon_sha256": "4c4a9cb985195f1c25cafe2485c3ff399a83550a4fff024a18cddbbe2720c936"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.2273",
    "kind": "arxiv",
    "version": 2
  }
}