Pith Number

pith:YQGDDVZX

pith:2018:YQGDDVZXPCWHR4Y5NJBOHLLQNP

not attested not anchored not stored refs pending

A Survey on Nonconvex Regularization Based Sparse and Low-Rank Recovery in Signal Processing, Statistics, and Machine Learning

Fei Wen, Lei Chu, Peilin Liu, Robert C. Qiu

arxiv:1808.05403 v3 · 2018-08-16 · cs.IT · cs.LG · eess.SP · 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{YQGDDVZXPCWHR4Y5NJBOHLLQNP}

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	2026-05-17T23:44:02.863180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c40c31d73778ac78f31d6a42e3ad706bfe19a772733b1f5199d5d073d5ae141c

Aliases

arxiv: 1808.05403 · arxiv_version: 1808.05403v3 · doi: 10.48550/arxiv.1808.05403 · pith_short_12: YQGDDVZXPCWH · pith_short_16: YQGDDVZXPCWHR4Y5 · pith_short_8: YQGDDVZX

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/YQGDDVZXPCWHR4Y5NJBOHLLQNP \
  | 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: c40c31d73778ac78f31d6a42e3ad706bfe19a772733b1f5199d5d073d5ae141c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1e39ae5acd653abc3bb18b3b430d2198c502257763777cdb2e0ecc7cd73811d",
    "cross_cats_sorted": [
      "cs.LG",
      "eess.SP",
      "math.IT",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-08-16T10:25:48Z",
    "title_canon_sha256": "84cca2c62fb98ca328e1a21a0699ff5f7b39f4e39168f9d6e3e6b4bad69d884a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.05403",
    "kind": "arxiv",
    "version": 3
  }
}