Pith Number

pith:5ZU3HY2E

pith:2011:5ZU3HY2EPFM7MWPGEARDT7BHGT

not attested not anchored not stored refs pending

Optimization with Sparsity-Inducing Penalties

Francis Bach (LIENS, Guillaume Obozinski (LIENS, INRIA Paris - Rocquencourt), Julien Mairal, Rodolphe Jenatton (LIENS

arxiv:1108.0775 v2 · 2011-08-03 · cs.LG · math.OC · 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{5ZU3HY2EPFM7MWPGEARDT7BHGT}

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	2026-05-18T04:07:52.444418Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee69b3e3447959f659e6202239fc2734ead6c4283eab12a73bc1548a9ebec191

Aliases

arxiv: 1108.0775 · arxiv_version: 1108.0775v2 · doi: 10.48550/arxiv.1108.0775 · pith_short_12: 5ZU3HY2EPFM7 · pith_short_16: 5ZU3HY2EPFM7MWPG · pith_short_8: 5ZU3HY2E

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/5ZU3HY2EPFM7MWPGEARDT7BHGT \
  | 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: ee69b3e3447959f659e6202239fc2734ead6c4283eab12a73bc1548a9ebec191

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bc66fed8478ff807bbf83660e2750c0d2b6d6afc80e77100ad8710a1d4158c1",
    "cross_cats_sorted": [
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2011-08-03T07:55:19Z",
    "title_canon_sha256": "84c5fa2c34c888bc41c507c1c6fd294a4926bdc2862e817ba60020d3950bc53f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.0775",
    "kind": "arxiv",
    "version": 2
  }
}