Pith Number

pith:J7DBXAT5

pith:2012:J7DBXAT5RRYSEWU2B6CLKKE5K7

not attested not anchored not stored refs pending

Two Algorithms for Orthogonal Nonnegative Matrix Factorization with Application to Clustering

Filippo Pompili, Fran\c{c}ois Glineur, Nicolas Gillis, P.-A. Absil

arxiv:1201.0901 v2 · 2012-01-04 · math.OC · cs.IR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J7DBXAT5RRYSEWU2B6CLKKE5K7}

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	2026-05-18T02:21:26.734654Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fc61b827d8c71225a9a0f84b5289d57c28e95140ba3fc2464cf716da0e31191

Aliases

arxiv: 1201.0901 · arxiv_version: 1201.0901v2 · doi: 10.48550/arxiv.1201.0901 · pith_short_12: J7DBXAT5RRYS · pith_short_16: J7DBXAT5RRYSEWU2 · pith_short_8: J7DBXAT5

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/J7DBXAT5RRYSEWU2B6CLKKE5K7 \
  | 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: 4fc61b827d8c71225a9a0f84b5289d57c28e95140ba3fc2464cf716da0e31191

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c169c5536fd1f80c28613a93faf3d0ca2e61b4ac54d6649fcb128ffe88c396b7",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-01-04T14:39:39Z",
    "title_canon_sha256": "e1fa8653d59b88f40893a5be16c087fbfa7ce238258112bbeef339668647f63d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.0901",
    "kind": "arxiv",
    "version": 2
  }
}