Pith Number

pith:7WD2JRYI

pith:2017:7WD2JRYIYXG3STRTBZE7LBHHL7

not attested not anchored not stored refs pending

Risk Estimators for Choosing Regularization Parameters in Ill-Posed Problems - Properties and Limitations

Christoph Brune, Felix Lucka, Frank W\"ubbeling, Holger Dette, Katharina Proksch, Martin Burger, Nicolai Bissantz

arxiv:1701.04970 v2 · 2017-01-18 · math.ST · math.NA · math.OC · 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{7WD2JRYIYXG3STRTBZE7LBHHL7}

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	2026-05-18T00:33:06.886250Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd87a4c708c5cdb94e330e49f584e75fe8c82f1f9c85d47ce923b128f57bf80d

Aliases

arxiv: 1701.04970 · arxiv_version: 1701.04970v2 · doi: 10.48550/arxiv.1701.04970 · pith_short_12: 7WD2JRYIYXG3 · pith_short_16: 7WD2JRYIYXG3STRT · pith_short_8: 7WD2JRYI

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/7WD2JRYIYXG3STRTBZE7LBHHL7 \
  | 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: fd87a4c708c5cdb94e330e49f584e75fe8c82f1f9c85d47ce923b128f57bf80d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7333b3ec0a76900e30d5ea2f72864f1ba22c3458fc259f3372dc937f7aee11f",
    "cross_cats_sorted": [
      "math.NA",
      "math.OC",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2017-01-18T06:55:51Z",
    "title_canon_sha256": "c0b10f36cb9f42ea5e8c7f9e31cdc13b824418c1e0d09be780f22a50009a4eb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.04970",
    "kind": "arxiv",
    "version": 2
  }
}