Pith Number

pith:DBNDRJAA

pith:2008:DBNDRJAAFENUDG7I6G6RGCLC2A

not attested not anchored not stored refs pending

Thresholded Basis Pursuit: An LP Algorithm for Achieving Optimal Support Recovery for Sparse and Approximately Sparse Signals from Noisy Random Measurements

M. Zhao, V. Saligrama

arxiv:0809.4883 v3 · 2008-09-29 · 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{DBNDRJAAFENUDG7I6G6RGCLC2A}

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	2026-05-18T02:24:56.957881Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

185a38a400291b419be8f1bd130962d01fe78bb4bcc0ed035008e04cf0497575

Aliases

arxiv: 0809.4883 · arxiv_version: 0809.4883v3 · doi: 10.48550/arxiv.0809.4883 · pith_short_12: DBNDRJAAFENU · pith_short_16: DBNDRJAAFENUDG7I · pith_short_8: DBNDRJAA

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/DBNDRJAAFENUDG7I6G6RGCLC2A \
  | 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: 185a38a400291b419be8f1bd130962d01fe78bb4bcc0ed035008e04cf0497575

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26a9b1b7bd3024de0459c1079c16fae2202dd59986246ee08142aeccc473e3fe",
    "cross_cats_sorted": [
      "cs.LG",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2008-09-29T14:01:13Z",
    "title_canon_sha256": "9cde8b760d58664a1ddd35c575d6d77a5c1c71d1408ab8e52162fbb61939a3ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.4883",
    "kind": "arxiv",
    "version": 3
  }
}