Pith Number

pith:QTSUEVBQ

pith:2010:QTSUEVBQNNL5BQ3MOYIU4CTOSC

not attested not anchored not stored refs pending

An algorithm for the principal component analysis of large data sets

Mark Tygert, Nathan Halko, Per-Gunnar Martinsson, Yoel Shkolnisky

arxiv:1007.5510 v2 · 2010-07-30 · stat.CO · 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{QTSUEVBQNNL5BQ3MOYIU4CTOSC}

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	2026-05-18T04:05:47.691137Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84e54254306b57d0c36c76114e0a6e90802841800e9870f6e9c40e835fa8c2d5

Aliases

arxiv: 1007.5510 · arxiv_version: 1007.5510v2 · doi: 10.48550/arxiv.1007.5510 · pith_short_12: QTSUEVBQNNL5 · pith_short_16: QTSUEVBQNNL5BQ3M · pith_short_8: QTSUEVBQ

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/QTSUEVBQNNL5BQ3MOYIU4CTOSC \
  | 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: 84e54254306b57d0c36c76114e0a6e90802841800e9870f6e9c40e835fa8c2d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1a88c92ac72abf0092cda0a0a430f5801c84fccefcddc2b27c10caf4bbcc96e",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2010-07-30T18:24:23Z",
    "title_canon_sha256": "a23d6a38a2440809a3920ae2cee1a2374adc84e097d96c154acdf284f97a3f67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.5510",
    "kind": "arxiv",
    "version": 2
  }
}