Pith Number

pith:A2D27G35

pith:2016:A2D27G35NAYDKS4Z5TUKOLMXZI

not attested not anchored not stored refs pending

Elastic-net regularization versus $\ell^1$-regularization for linear inverse problems with quasi-sparse solutions

Bernd Hofmann, De-Han Chen, Jun Zou

arxiv:1604.03364 v2 · 2016-04-12 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A2D27G35NAYDKS4Z5TUKOLMXZI}

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	2026-05-18T00:53:34.376351Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0687af9b7d6830354b99ece8a72d97ca31087243c25b25f51e7dede1b653de44

Aliases

arxiv: 1604.03364 · arxiv_version: 1604.03364v2 · doi: 10.48550/arxiv.1604.03364 · pith_short_12: A2D27G35NAYD · pith_short_16: A2D27G35NAYDKS4Z · pith_short_8: A2D27G35

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/A2D27G35NAYDKS4Z5TUKOLMXZI \
  | 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: 0687af9b7d6830354b99ece8a72d97ca31087243c25b25f51e7dede1b653de44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "181d371a55c6b774ce175d2c5e5b1678941d54647568a0406bb14a69bea40d89",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2016-04-12T12:19:57Z",
    "title_canon_sha256": "0c50cd8bb56e92962dae12de104a73106c010d7a5fcc7f5cacf1efd52de17f2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.03364",
    "kind": "arxiv",
    "version": 2
  }
}