Pith Number

pith:TSW3JHKX

pith:2009:TSW3JHKXTAUZWYFQ4LRZBO7QQF

not attested not anchored not stored refs pending

Rank-Sparsity Incoherence for Matrix Decomposition

Alan S. Willsky, Pablo A. Parrilo, Sujay Sanghavi, Venkat Chandrasekaran

arxiv:0906.2220 v1 · 2009-06-11 · math.OC · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TSW3JHKXTAUZWYFQ4LRZBO7QQF}

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	2026-05-18T04:16:10.818423Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9cadb49d5798299b60b0e2e390bbf08145c1cf1fd9b4132414d2692739087abd

Aliases

arxiv: 0906.2220 · arxiv_version: 0906.2220v1 · doi: 10.48550/arxiv.0906.2220 · pith_short_12: TSW3JHKXTAUZ · pith_short_16: TSW3JHKXTAUZWYFQ · pith_short_8: TSW3JHKX

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/TSW3JHKXTAUZWYFQ4LRZBO7QQF \
  | 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: 9cadb49d5798299b60b0e2e390bbf08145c1cf1fd9b4132414d2692739087abd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7c1c13d5dfa65d2ddf6e5315805a3659b6110f495f132824a1e14a7bf4d8279",
    "cross_cats_sorted": [
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2009-06-11T21:47:33Z",
    "title_canon_sha256": "f145e4d0d2fd0bfb682d130a1ac13a3e7e8d9866f5c1b23ba3763f87f6fa9859"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2220",
    "kind": "arxiv",
    "version": 1
  }
}