Pith Number

pith:LBFBY36L

pith:2007:LBFBY36LZKO6NVVXA3JMD52VEP

not attested not anchored not stored refs pending

On the complexity of nonnegative matrix factorization

Stephen A. Vavasis

arxiv:0708.4149 v2 · 2007-08-30 · cs.NA · cs.IR · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LBFBY36LZKO6NVVXA3JMD52VEP}

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.

Cited by

1 paper in Pith

Bayesian Non-Negative Matrix Factorization with Correlated Mutation Type Probabilities for Mutational Signatures

Receipt and verification

First computed	2026-06-03T22:06:02.095170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

584a1c6fcbca9de6d6b706d2c1f75523eb8cbc2f87653b71d9a61e9002654846

Aliases

arxiv: 0708.4149 · arxiv_version: 0708.4149v2 · doi: 10.48550/arxiv.0708.4149 · pith_short_12: LBFBY36LZKO6 · pith_short_16: LBFBY36LZKO6NVVX · pith_short_8: LBFBY36L

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/LBFBY36LZKO6NVVXA3JMD52VEP \
  | 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: 584a1c6fcbca9de6d6b706d2c1f75523eb8cbc2f87653b71d9a61e9002654846

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bde9bd3ad2319ca4f9b0266065c62550b18e5e869b8da2f32bc63972463e1096",
    "cross_cats_sorted": [
      "cs.IR",
      "cs.NA"
    ],
    "license": "",
    "primary_cat": "cs.NA",
    "submitted_at": "2007-08-30T13:01:33Z",
    "title_canon_sha256": "6f4c31103ad805f09db76ade430dc6b6f090ea7897052e1c7d9d443d076fb388"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.4149",
    "kind": "arxiv",
    "version": 2
  }
}