Pith Number

pith:4FXDCSXF

pith:2019:4FXDCSXFTPUEXW2M4AKIHJAE4F

not attested not anchored not stored refs pending

Efficiency of Coordinate Descent Methods For Structured Nonconvex Optimization

Chenghao Lan, Qi Deng

arxiv:1909.00918 v1 · 2019-09-03 · 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{4FXDCSXFTPUEXW2M4AKIHJAE4F}

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	2026-07-05T00:04:19.544590Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e16e314ae59be84bdb4ce01483a404e15c2dc91c36b68cf1e4c9b8a25041fd4a

Aliases

arxiv: 1909.00918 · arxiv_version: 1909.00918v1 · doi: 10.48550/arxiv.1909.00918 · pith_short_12: 4FXDCSXFTPUE · pith_short_16: 4FXDCSXFTPUEXW2M · pith_short_8: 4FXDCSXF

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/4FXDCSXFTPUEXW2M4AKIHJAE4F \
  | 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: e16e314ae59be84bdb4ce01483a404e15c2dc91c36b68cf1e4c9b8a25041fd4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0165e7ddeb813ec34a66c34cc2a82245354a9d66fd693ded3e92fea088549065",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-09-03T02:11:11Z",
    "title_canon_sha256": "a2cc7aa41dab7bdeb7196ab182423a88a36a67e1e0b99122cdcc15cfb2709f9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.00918",
    "kind": "arxiv",
    "version": 1
  }
}