Pith Number

pith:KDJCPR2T

pith:2026:KDJCPR2TQJ5ZTRK65IEXM2CPER

not attested not anchored not stored refs pending

Optimal ridge regularization revisited

Jack Timmermans, Sergio A. Alvarez

arxiv:2605.28679 v1 · 2026-05-27 · cs.LG · 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{KDJCPR2TQJ5ZTRK65IEXM2CPER}

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	2026-05-28T02:04:59.660603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50d227c753827b99c55eea0976684f24525f8c15f3f9cbf9059496a51374759b

Aliases

arxiv: 2605.28679 · arxiv_version: 2605.28679v1 · doi: 10.48550/arxiv.2605.28679 · pith_short_12: KDJCPR2TQJ5Z · pith_short_16: KDJCPR2TQJ5ZTRK6 · pith_short_8: KDJCPR2T

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/KDJCPR2TQJ5ZTRK65IEXM2CPER \
  | 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: 50d227c753827b99c55eea0976684f24525f8c15f3f9cbf9059496a51374759b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fc93564f5103cd56753beee2443908a15355fb6946e698941b9d2977d8177f1",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-27T16:12:11Z",
    "title_canon_sha256": "3b8e01fbf8e62f1c019cb1606585c35f9dc1e5c14906a1e02d954dc412e548a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28679",
    "kind": "arxiv",
    "version": 1
  }
}