Pith Number

pith:3FO27XZT

pith:2009:3FO27XZTMKEHTSMMIWPSQBWHOP

not attested not anchored not stored refs pending

PARNES: A rapidly convergent algorithm for accurate recovery of sparse and approximately sparse signals

Cinna Julie Wu, Lek-Heng Lim, Ming Gu

arxiv:0911.0492 v4 · 2009-11-03 · math.OC · cs.SY · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3FO27XZTMKEHTSMMIWPSQBWHOP}

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	2026-05-18T03:58:51.887571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d95dafdf33628879c98c459f2806c773d093f3c2a9717fd4fb188dff0238eb3c

Aliases

arxiv: 0911.0492 · arxiv_version: 0911.0492v4 · doi: 10.48550/arxiv.0911.0492 · pith_short_12: 3FO27XZTMKEH · pith_short_16: 3FO27XZTMKEHTSMM · pith_short_8: 3FO27XZT

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/3FO27XZTMKEHTSMMIWPSQBWHOP \
  | 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: d95dafdf33628879c98c459f2806c773d093f3c2a9717fd4fb188dff0238eb3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5948590c475199156e39d8587166c8f21b2c687a6f2a9dffac69f29e0c58ff2d",
    "cross_cats_sorted": [
      "cs.SY",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2009-11-03T04:44:00Z",
    "title_canon_sha256": "465dcb57d713300613e5e759d187fa251e70e34ae0391033de2e99275fde95bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0492",
    "kind": "arxiv",
    "version": 4
  }
}