Pith Number

pith:DLEYD2TV

pith:2013:DLEYD2TVJKOZX2MDJ5X7LJPLBV

not attested not anchored not stored refs pending

Sparse Representation of a Polytope and Recovery of Sparse Signals and Low-rank Matrices

Anru Zhang, T. Tony Cai

arxiv:1306.1154 v2 · 2013-06-05 · cs.IT · math.IT · math.ST · stat.ML · 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{DLEYD2TVJKOZX2MDJ5X7LJPLBV}

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	2026-05-18T03:09:33.500880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ac981ea754a9d9be9834f6ff5a5eb0d4e6f4606546f12e3b3153dcf8cd535ea

Aliases

arxiv: 1306.1154 · arxiv_version: 1306.1154v2 · doi: 10.48550/arxiv.1306.1154 · pith_short_12: DLEYD2TVJKOZ · pith_short_16: DLEYD2TVJKOZX2MD · pith_short_8: DLEYD2TV

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/DLEYD2TVJKOZX2MDJ5X7LJPLBV \
  | 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: 1ac981ea754a9d9be9834f6ff5a5eb0d4e6f4606546f12e3b3153dcf8cd535ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c64a9324a3e3bd418360d4f43a71c5ccdf5d7985fc866ab1e8a61fee9ab4045b",
    "cross_cats_sorted": [
      "math.IT",
      "math.ST",
      "stat.ML",
      "stat.TH"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-06-05T15:50:28Z",
    "title_canon_sha256": "2030b8730a9901f4244c4921981beea4397e18e4d1955cf014f73e7a5f07bbd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.1154",
    "kind": "arxiv",
    "version": 2
  }
}