Pith Number

pith:PWDWUBU6

pith:2011:PWDWUBU63MBMVAZ4BGHWM7CHL2

not attested not anchored not stored refs pending

Strongly Convex Programming for Exact Matrix Completion and Robust Principal Component Analysis

Hui Zhang, Jian-Feng Cai, Jubo Zhu, Lizhi Cheng

arxiv:1112.3946 v2 · 2011-12-16 · cs.IT · cs.LG · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PWDWUBU63MBMVAZ4BGHWM7CHL2}

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	2026-05-18T04:05:14.624124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d876a069edb02ca833c098f667c475e8163113368de4105f685574a5ee3a60c

Aliases

arxiv: 1112.3946 · arxiv_version: 1112.3946v2 · doi: 10.48550/arxiv.1112.3946 · pith_short_12: PWDWUBU63MBM · pith_short_16: PWDWUBU63MBMVAZ4 · pith_short_8: PWDWUBU6

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/PWDWUBU63MBMVAZ4BGHWM7CHL2 \
  | 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: 7d876a069edb02ca833c098f667c475e8163113368de4105f685574a5ee3a60c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27b8bea876f7154be40a3aced12b00531210b01767836eeb2f993a9e41d09c95",
    "cross_cats_sorted": [
      "cs.LG",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-12-16T20:40:23Z",
    "title_canon_sha256": "502b2a29be9aa725337ea20138e5242f07096ab2db70091cd208bbc9e596a37f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.3946",
    "kind": "arxiv",
    "version": 2
  }
}