Pith Number

pith:IJEWKWP4

pith:2017:IJEWKWP4TYAMIVQ4Y3VZYDI5NX

not attested not anchored not stored refs pending

Geometry of Factored Nuclear Norm Regularization

Gongguo Tang, Qiuwei Li, Zhihui Zhu

arxiv:1704.01265 v1 · 2017-04-05 · cs.NA · cs.IT · cs.LG · math.IT · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IJEWKWP4TYAMIVQ4Y3VZYDI5NX}

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	2026-05-18T00:46:54.891975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42496559fc9e00c4561cc6eb9c0d1d6dce0d1c9e5694eef97a22239bf1a95ba7

Aliases

arxiv: 1704.01265 · arxiv_version: 1704.01265v1 · doi: 10.48550/arxiv.1704.01265 · pith_short_12: IJEWKWP4TYAM · pith_short_16: IJEWKWP4TYAMIVQ4 · pith_short_8: IJEWKWP4

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/IJEWKWP4TYAMIVQ4Y3VZYDI5NX \
  | 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: 42496559fc9e00c4561cc6eb9c0d1d6dce0d1c9e5694eef97a22239bf1a95ba7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f464ddd8d09b999a25bdf375abe8ef9fc8e1ffa221c1da78a486a7dbc4f560a",
    "cross_cats_sorted": [
      "cs.IT",
      "cs.LG",
      "math.IT",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2017-04-05T04:22:58Z",
    "title_canon_sha256": "1d05ae526ece64401087331ac484a31e0c44c996438638f4e17cb064b0881037"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.01265",
    "kind": "arxiv",
    "version": 1
  }
}