Pith Number

pith:U4G7HH2D

pith:2014:U4G7HH2D6VWBBFTV26KNVUHUTD

not attested not anchored not stored refs pending

Screening Tests for Lasso Problems

Peter J. Ramadge, Yun Wang, Zhen James Xiang

arxiv:1405.4897 v2 · 2014-05-19 · 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{U4G7HH2D6VWBBFTV26KNVUHUTD}

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	2026-05-18T01:08:27.554760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a70df39f43f56c109675d794dad0f498e444096a028c21387882c639e32226c5

Aliases

arxiv: 1405.4897 · arxiv_version: 1405.4897v2 · doi: 10.48550/arxiv.1405.4897 · pith_short_12: U4G7HH2D6VWB · pith_short_16: U4G7HH2D6VWBBFTV · pith_short_8: U4G7HH2D

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/U4G7HH2D6VWBBFTV26KNVUHUTD \
  | 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: a70df39f43f56c109675d794dad0f498e444096a028c21387882c639e32226c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55210aadd0a428a8d59d5fc3f76599947cb12aa93bb6773d3cab01cb9e9b3c19",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2014-05-19T21:07:08Z",
    "title_canon_sha256": "53c13e206bd9e5fee8987151fb61fcc86b7deb933d09d8f4f1847f8ca9fd268e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4897",
    "kind": "arxiv",
    "version": 2
  }
}