Pith Number

pith:OQIPUKUN

pith:2013:OQIPUKUNWT26XYB4OEWJJ4ASTI

not attested not anchored not stored refs pending

A least-squares method for sparse low rank approximation of multivariate functions

Anthony Nouy, Mathilde Chevreuil, Prashant Rai, R\'egis Lebrun

arxiv:1305.0030 v2 · 2013-04-30 · math.NA · 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{OQIPUKUNWT26XYB4OEWJJ4ASTI}

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	2026-05-18T01:25:08.938954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7410fa2a8db4f5ebe03c712c94f0129a2b6c2011c459c5896e64a77a271d7345

Aliases

arxiv: 1305.0030 · arxiv_version: 1305.0030v2 · doi: 10.48550/arxiv.1305.0030 · pith_short_12: OQIPUKUNWT26 · pith_short_16: OQIPUKUNWT26XYB4 · pith_short_8: OQIPUKUN

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/OQIPUKUNWT26XYB4OEWJJ4ASTI \
  | 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: 7410fa2a8db4f5ebe03c712c94f0129a2b6c2011c459c5896e64a77a271d7345

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "983bb47ce43a21efd8741e6197fa9919a29bb04d4deed1c69875c73a57fd01e4",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-04-30T21:25:54Z",
    "title_canon_sha256": "8cb31a02bd2843d0f068b4f4395c1be87413df4407262cfecbf0a6a143572b27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0030",
    "kind": "arxiv",
    "version": 2
  }
}