Pith Number

pith:VDPNT6T3

pith:2018:VDPNT6T3HHAQOMCF47K753HNDR

not attested not anchored not stored refs pending

Weighted Low-Rank Approximation of Matrices and Background Modeling

Aritra Dutta, Peter Richtarik, Xin Li

arxiv:1804.06252 v1 · 2018-04-15 · cs.CV · cs.NA · math.NA · 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{VDPNT6T3HHAQOMCF47K753HNDR}

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	2026-05-18T00:18:21.238560Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8ded9fa7b39c1073045e7d5feeced1c77b05217fc19821b1a6e13860cb2c113

Aliases

arxiv: 1804.06252 · arxiv_version: 1804.06252v1 · doi: 10.48550/arxiv.1804.06252 · pith_short_12: VDPNT6T3HHAQ · pith_short_16: VDPNT6T3HHAQOMCF · pith_short_8: VDPNT6T3

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/VDPNT6T3HHAQOMCF47K753HNDR \
  | 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: a8ded9fa7b39c1073045e7d5feeced1c77b05217fc19821b1a6e13860cb2c113

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f85e0c47173c7633549cd106b4ac4377b4f3274b36b204beeb473369a4df78c",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-04-15T21:43:08Z",
    "title_canon_sha256": "8e936d53681105c60ec5118ebf024afc9ea46b795e350c17da9be4db36464722"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.06252",
    "kind": "arxiv",
    "version": 1
  }
}