Pith Number

pith:3LGDRX7C

pith:2013:3LGDRX7CYA4L5HYAPRBYSVCUIH

not attested not anchored not stored refs pending

Matrix Completion via Max-Norm Constrained Optimization

T. Tony Cai, Wen-Xin Zhou

arxiv:1303.0341 v3 · 2013-03-02 · cs.LG · cs.IT · math.IT · 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{3LGDRX7CYA4L5HYAPRBYSVCUIH}

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	2026-05-18T00:45:27.148485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dacc38dfe2c038be9f007c4389545441c4df0b6dfd59ae7c1eec694e821fc0b4

Aliases

arxiv: 1303.0341 · arxiv_version: 1303.0341v3 · doi: 10.48550/arxiv.1303.0341 · pith_short_12: 3LGDRX7CYA4L · pith_short_16: 3LGDRX7CYA4L5HYA · pith_short_8: 3LGDRX7C

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/3LGDRX7CYA4L5HYAPRBYSVCUIH \
  | 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: dacc38dfe2c038be9f007c4389545441c4df0b6dfd59ae7c1eec694e821fc0b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "829df465111d9d925c7bfaa53f82a278494cd9cf5336e816e14025dfc74d444d",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2013-03-02T03:22:37Z",
    "title_canon_sha256": "ef0d18d5b479024381f6d1da3b4e1b0b6e9c7efeb88cbb9cecda43e9831981c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.0341",
    "kind": "arxiv",
    "version": 3
  }
}