Pith Number

pith:AMI3VRFK

pith:2009:AMI3VRFKIIKY6IFFTTCSNQE5MU

not attested not anchored not stored refs pending

Elastic-Net Regularization: Error estimates and Active Set Methods

Bangti Jin, Dirk Lorenz, Stefan Schiffler

arxiv:0905.0796 v2 · 2009-05-06 · math.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{AMI3VRFKIIKY6IFFTTCSNQE5MU}

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	2026-05-18T02:13:47.179976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0311bac4aa42158f20a59cc526c09d653876bcf7be97adf1650a1dad397451e5

Aliases

arxiv: 0905.0796 · arxiv_version: 0905.0796v2 · doi: 10.48550/arxiv.0905.0796 · pith_short_12: AMI3VRFKIIKY · pith_short_16: AMI3VRFKIIKY6IFF · pith_short_8: AMI3VRFK

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/AMI3VRFKIIKY6IFFTTCSNQE5MU \
  | 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: 0311bac4aa42158f20a59cc526c09d653876bcf7be97adf1650a1dad397451e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5db86014fbf141983316743630e89bb5e4bc3b728f8db5e8ff671e8bd992178",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-05-06T10:33:50Z",
    "title_canon_sha256": "aaa61142a9d73ca71cfa48ef9b2ffa6cd86768f15b1dbfaa563f7c1d46cc5ad4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0796",
    "kind": "arxiv",
    "version": 2
  }
}