Pith Number

pith:AVA6KDXK

pith:2009:AVA6KDXKCFF7UG67RTOGJOOWBM

not attested not anchored not stored refs pending

Bi-cross-validation of the SVD and the nonnegative matrix factorization

Art B. Owen, Patrick O. Perry

arxiv:0908.2062 v1 · 2009-08-14 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AVA6KDXKCFF7UG67RTOGJOOWBM}

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	2026-07-04T15:47:58.227118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0541e50eea114bfa1bdf8cdc64b9d60b0d3e40e37bf76535ed6b33ffdbb1c7ee

Aliases

arxiv: 0908.2062 · arxiv_version: 0908.2062v1 · doi: 10.48550/arxiv.0908.2062 · pith_short_12: AVA6KDXKCFF7 · pith_short_16: AVA6KDXKCFF7UG67 · pith_short_8: AVA6KDXK

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/AVA6KDXKCFF7UG67RTOGJOOWBM \
  | 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: 0541e50eea114bfa1bdf8cdc64b9d60b0d3e40e37bf76535ed6b33ffdbb1c7ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89b9faf2e94095cfb093e70d6b4517dda328706fb148b346d165967e39f00e59",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2009-08-14T13:20:59Z",
    "title_canon_sha256": "edd3ccb97abcbd49433a834f6c6f522c3e34c857cb648b2abfef004caa0a8835"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2062",
    "kind": "arxiv",
    "version": 1
  }
}