Pith Number

pith:IE3MJZX4

pith:2017:IE3MJZX4DXUFRQJOIIVCLQUZMI

not attested not anchored not stored refs pending

On Principal Components Regression, Random Projections, and Column Subsampling

Martin Slawski

arxiv:1709.08104 v2 · 2017-09-23 · math.ST · stat.ML · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IE3MJZX4DXUFRQJOIIVCLQUZMI}

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	2026-05-18T00:33:29.751224Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4136c4e6fc1de858c12e422a25c29962179a702ac148be42d2dc8e843c1058d0

Aliases

arxiv: 1709.08104 · arxiv_version: 1709.08104v2 · doi: 10.48550/arxiv.1709.08104 · pith_short_12: IE3MJZX4DXUF · pith_short_16: IE3MJZX4DXUFRQJO · pith_short_8: IE3MJZX4

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/IE3MJZX4DXUFRQJOIIVCLQUZMI \
  | 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: 4136c4e6fc1de858c12e422a25c29962179a702ac148be42d2dc8e843c1058d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18bce69db4cfa5be86258ddf4d41e940a7c9c498a21cec4a8ba491bea9eec918",
    "cross_cats_sorted": [
      "stat.ML",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2017-09-23T19:12:41Z",
    "title_canon_sha256": "d5a38b455de2e42dc0bef59be272596e16c7f934b54a5bc0ab6ba2e4c09d3e8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.08104",
    "kind": "arxiv",
    "version": 2
  }
}