Pith Number

pith:SAMBWSJ5

pith:2010:SAMBWSJ5XB5ZMTXY46DFBXEBCU

not attested not anchored not stored refs pending

A Very Fast Algorithm for Matrix Factorization

Geoffrey J McLachlan, Shu-Kay Ng, Suren I Rathnayake, Tian-Hsiang Huang, Vladimir Nikulin

arxiv:1011.0506 v1 · 2010-11-02 · stat.CO · cs.IR · physics.data-an · 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{SAMBWSJ5XB5ZMTXY46DFBXEBCU}

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	2026-05-18T04:37:21.462900Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90181b493db87b964ef8e78650dc811525398c8c20ea6994c223f6acfd8caeb5

Aliases

arxiv: 1011.0506 · arxiv_version: 1011.0506v1 · doi: 10.48550/arxiv.1011.0506 · pith_short_12: SAMBWSJ5XB5Z · pith_short_16: SAMBWSJ5XB5ZMTXY · pith_short_8: SAMBWSJ5

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/SAMBWSJ5XB5ZMTXY46DFBXEBCU \
  | 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: 90181b493db87b964ef8e78650dc811525398c8c20ea6994c223f6acfd8caeb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d57096f6c4d804e2cbd6400dea641c9365ff8d02d3ed5cc69bfcc91de18f7549",
    "cross_cats_sorted": [
      "cs.IR",
      "physics.data-an",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2010-11-02T03:36:52Z",
    "title_canon_sha256": "23c82d87055daff6e6db877a3168e0f0abdc0d363a979b5fe1139daf1e964b9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.0506",
    "kind": "arxiv",
    "version": 1
  }
}