Pith Number

pith:Y3TPZ4AU

pith:2020:Y3TPZ4AULH22Z6BCLQYXH3IAS7

not attested not anchored not stored refs pending

Orthant Based Proximal Stochastic Gradient Method for $\ell_1$-Regularized Optimization

Bo Ji, Guanyi Wang, Jing Tian, Sheng Yi, Tianyi Chen, Tianyu Ding, Xiao Tu, Yixin Shi, Zhihui Zhu

arxiv:2004.03639 v2 · 2020-04-07 · math.OC · 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{Y3TPZ4AULH22Z6BCLQYXH3IAS7}

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	2026-07-05T01:21:36.797663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6e6fcf01459f5acf8225c3173ed0097ff8a4a5bc1fd733b8c65b5fe8718c99d

Aliases

arxiv: 2004.03639 · arxiv_version: 2004.03639v2 · doi: 10.48550/arxiv.2004.03639 · pith_short_12: Y3TPZ4AULH22 · pith_short_16: Y3TPZ4AULH22Z6BC · pith_short_8: Y3TPZ4AU

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/Y3TPZ4AULH22Z6BCLQYXH3IAS7 \
  | 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: c6e6fcf01459f5acf8225c3173ed0097ff8a4a5bc1fd733b8c65b5fe8718c99d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ee92450a2511d52fe3730e6416d53f1143a40496561d7d7d32cd67b74e53f4d",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-04-07T18:23:39Z",
    "title_canon_sha256": "5a8521ba41fa7d27262174d1ef4691e51b105841d84c69c90212e109b9d044f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.03639",
    "kind": "arxiv",
    "version": 2
  }
}