Pith Number

pith:KCZQRXFP

pith:2016:KCZQRXFP2JS3RD4D4HLZHTDNNO

not attested not anchored not stored refs pending

Superfast Low-Rank Approximation and Least Squares Regression

John Svadlenka, Liang Zhao, Qi Luan, Victor Y. Pan

arxiv:1611.01391 v5 · 2016-11-03 · math.NA · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KCZQRXFP2JS3RD4D4HLZHTDNNO}

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	2026-05-18T00:05:05.861132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50b308dcafd265b88f83e1d793cc6d6b9b839093b33dda0c043980a7ef4d1563

Aliases

arxiv: 1611.01391 · arxiv_version: 1611.01391v5 · doi: 10.48550/arxiv.1611.01391 · pith_short_12: KCZQRXFP2JS3 · pith_short_16: KCZQRXFP2JS3RD4D · pith_short_8: KCZQRXFP

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/KCZQRXFP2JS3RD4D4HLZHTDNNO \
  | 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: 50b308dcafd265b88f83e1d793cc6d6b9b839093b33dda0c043980a7ef4d1563

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a22a7a71a39c84966ad2393ff87c86c3636fcd499dd6daafa13d08b48bc92477",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-11-03T02:43:20Z",
    "title_canon_sha256": "80e49effeede6c35b1415c7520acf95cad1ce3e80ef78c75f6782474ddad2704"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.01391",
    "kind": "arxiv",
    "version": 5
  }
}