Pith Number

pith:XOD6V2W4

pith:2012:XOD6V2W4A6BRXWCSQEC63PHDVR

not attested not anchored not stored refs pending

An Efficient Primal-Dual Prox Method for Non-Smooth Optimization

Mehrdad Mahdavi, Rong Jin, Shenghuo Zhu, Tianbao Yang

arxiv:1201.5283 v5 · 2012-01-24 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XOD6V2W4A6BRXWCSQEC63PHDVR}

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	2026-05-18T03:17:34.386361Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb87eaeadc07831bd8528105edbce3ac64406829392a33f276f0067f49f5d21c

Aliases

arxiv: 1201.5283 · arxiv_version: 1201.5283v5 · doi: 10.48550/arxiv.1201.5283 · pith_short_12: XOD6V2W4A6BR · pith_short_16: XOD6V2W4A6BRXWCS · pith_short_8: XOD6V2W4

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/XOD6V2W4A6BRXWCSQEC63PHDVR \
  | 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: bb87eaeadc07831bd8528105edbce3ac64406829392a33f276f0067f49f5d21c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "672b61d61afd030fb0c6fadb5f4acb58dcd17380fd1cfb7b8d1f07ff49293d39",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-01-24T04:09:54Z",
    "title_canon_sha256": "39714dfc493ca1c0814ee867735258b0aed039dcd9d3fa607a707c97cb5d2e90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.5283",
    "kind": "arxiv",
    "version": 5
  }
}