Pith Number

pith:4JPDDIRG

pith:2016:4JPDDIRG54EKHGASO6CL4UZUPX

not attested not anchored not stored refs pending

Gap Safe screening rules for sparsity enforcing penalties

Alexandre Gramfort, Eugene Ndiaye, Joseph Salmon, Olivier Fercoq

arxiv:1611.05780 v4 · 2016-11-17 · stat.ML · cs.LG · math.OC · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4JPDDIRG54EKHGASO6CL4UZUPX}

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	2026-05-18T00:27:09.832509Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e25e31a226ef08a398127784be53347de8f01bad71e19d2cb678d32e03ed3624

Aliases

arxiv: 1611.05780 · arxiv_version: 1611.05780v4 · doi: 10.48550/arxiv.1611.05780 · pith_short_12: 4JPDDIRG54EK · pith_short_16: 4JPDDIRG54EKHGAS · pith_short_8: 4JPDDIRG

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/4JPDDIRG54EKHGASO6CL4UZUPX \
  | 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: e25e31a226ef08a398127784be53347de8f01bad71e19d2cb678d32e03ed3624

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9272c39e0ea61dc12824c183035fcd162d39e1319516827262c9c736143e7016",
    "cross_cats_sorted": [
      "cs.LG",
      "math.OC",
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2016-11-17T16:55:12Z",
    "title_canon_sha256": "0948e107d7ed45eecfcd9b28d38fd4843cf7b91f65b204a8ff19a7247db3d6ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.05780",
    "kind": "arxiv",
    "version": 4
  }
}