Pith Number

pith:W4RIBGNC

pith:2017:W4RIBGNCDHORDL24YK2HOFZRQA

not attested not anchored not stored refs pending

Understanding the Learned Iterative Soft Thresholding Algorithm with matrix factorization

Joan Bruna, Thomas Moreau

arxiv:1706.01338 v1 · 2017-06-02 · 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{W4RIBGNCDHORDL24YK2HOFZRQA}

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	2026-05-18T00:43:03.819601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7228099a219dd11af5cc2b4771731802fffba4462bc01af58fc61777984e263

Aliases

arxiv: 1706.01338 · arxiv_version: 1706.01338v1 · doi: 10.48550/arxiv.1706.01338 · pith_short_12: W4RIBGNCDHOR · pith_short_16: W4RIBGNCDHORDL24 · pith_short_8: W4RIBGNC

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/W4RIBGNCDHORDL24YK2HOFZRQA \
  | 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: b7228099a219dd11af5cc2b4771731802fffba4462bc01af58fc61777984e263

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13971a8e593c007d7fd20bb8493f64c02a4c65c5dc8b9d85857f1375f5f530d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2017-06-02T07:24:10Z",
    "title_canon_sha256": "8ca10aed154c85304fd424d3fd706edc059ddece0dd50bb9beae5b536fa46230"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.01338",
    "kind": "arxiv",
    "version": 1
  }
}