Pith Number

pith:M3HLVA4V

pith:2014:M3HLVA4VPSH4L52O2YTBQUFHLA

not attested not anchored not stored refs pending

Sparse Principal Component Analysis: a Least Squares approximation approach

Giovanni Maria Merola

arxiv:1406.1381 v2 · 2014-06-05 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M3HLVA4VPSH4L52O2YTBQUFHLA}

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	2026-05-18T02:45:04.021270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66ceba83957c8fc5f74ed6261850a7583c0ddcb1a5a6dd1a6a4df0af7cd32663

Aliases

arxiv: 1406.1381 · arxiv_version: 1406.1381v2 · doi: 10.48550/arxiv.1406.1381 · pith_short_12: M3HLVA4VPSH4 · pith_short_16: M3HLVA4VPSH4L52O · pith_short_8: M3HLVA4V

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/M3HLVA4VPSH4L52O2YTBQUFHLA \
  | 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: 66ceba83957c8fc5f74ed6261850a7583c0ddcb1a5a6dd1a6a4df0af7cd32663

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef90a382af97253fc538acc08fc53117622c555ae0ebf2fa8bdd3a05727640ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2014-06-05T13:37:12Z",
    "title_canon_sha256": "47fea04359c24b59ab88473953e965ba05be19e125103ca85bfc0b7abb2d226b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.1381",
    "kind": "arxiv",
    "version": 2
  }
}