Pith Number

pith:4HPTVWH4

pith:2012:4HPTVWH4GYCXDJHWTFDJQGF3RW

not attested not anchored not stored refs pending

On the Performance Bound of Sparse Estimation with Sensing Matrix Perturbation

Laming Chen, Yuantao Gu, Yujie Tang

arxiv:1211.6401 v2 · 2012-11-27 · cs.IT · 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{4HPTVWH4GYCXDJHWTFDJQGF3RW}

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	2026-05-18T01:52:54.255884Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1df3ad8fc360571a4f699469818bb8d8d2224931d495e8c9e199d2042cea223

Aliases

arxiv: 1211.6401 · arxiv_version: 1211.6401v2 · doi: 10.48550/arxiv.1211.6401 · pith_short_12: 4HPTVWH4GYCX · pith_short_16: 4HPTVWH4GYCXDJHW · pith_short_8: 4HPTVWH4

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/4HPTVWH4GYCXDJHWTFDJQGF3RW \
  | 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: e1df3ad8fc360571a4f699469818bb8d8d2224931d495e8c9e199d2042cea223

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e28fdf046bdf049b7cf5654e9d97dffe92b2bdd14b267d509bf0d2f974d4f80",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-11-27T19:46:15Z",
    "title_canon_sha256": "df4d7dca3e3d01ca5f4d73ebc9168e5f2a67af613481fcdaf2bd89879d5b035b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.6401",
    "kind": "arxiv",
    "version": 2
  }
}