Pith Number

pith:DPTLGOS3

pith:2018:DPTLGOS3RQXY2LMHJG3VZNZTDT

not attested not anchored not stored refs pending

Proximal Gradient Method for Nonsmooth Optimization over the Stiefel Manifold

Anthony Man-Cho So, Shiqian Ma, Shixiang Chen, Tong Zhang

arxiv:1811.00980 v2 · 2018-11-02 · 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{DPTLGOS3RQXY2LMHJG3VZNZTDT}

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	2026-05-17T23:46:29.631582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1be6b33a5b8c2f8d2d8749b75cb7331cf799e4dd04a92e3fcaa2030a3a543552

Aliases

arxiv: 1811.00980 · arxiv_version: 1811.00980v2 · doi: 10.48550/arxiv.1811.00980 · pith_short_12: DPTLGOS3RQXY · pith_short_16: DPTLGOS3RQXY2LMH · pith_short_8: DPTLGOS3

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/DPTLGOS3RQXY2LMHJG3VZNZTDT \
  | 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: 1be6b33a5b8c2f8d2d8749b75cb7331cf799e4dd04a92e3fcaa2030a3a543552

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30abed4dcc2939ae1a2b34942f5bae10d97f8e690941315adf2df853840c575e",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-11-02T16:52:39Z",
    "title_canon_sha256": "f0f609086af63a7e3e8b442d4efd6ca8a5e92776e457d0f2dd75ccca25a4b901"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.00980",
    "kind": "arxiv",
    "version": 2
  }
}