Pith Number

pith:G56OBAWV

pith:2009:G56OBAWVL3RSO3ENDCJ2EEQ6GH

not attested not anchored not stored refs pending

Sparse Signal Reconstruction via Iterative Support Detection

Wotao Yin, Yilun Wang

arxiv:0909.4359 v2 · 2009-09-24 · cs.IT · math.IT · math.NA · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G56OBAWVL3RSO3ENDCJ2EEQ6GH}

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	2026-05-18T01:26:25.850801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

377ce082d55ee3276c8d1893a2121e31dcb34e0d0c5aa59ab2eac981fa882cb0

Aliases

arxiv: 0909.4359 · arxiv_version: 0909.4359v2 · doi: 10.48550/arxiv.0909.4359 · pith_short_12: G56OBAWVL3RS · pith_short_16: G56OBAWVL3RSO3EN · pith_short_8: G56OBAWV

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/G56OBAWVL3RSO3ENDCJ2EEQ6GH \
  | 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: 377ce082d55ee3276c8d1893a2121e31dcb34e0d0c5aa59ab2eac981fa882cb0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64527fa054355db4cbf7900ed18f23f6f07f8bda0e99aecf0bef2781f5624826",
    "cross_cats_sorted": [
      "math.IT",
      "math.NA",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-09-24T04:11:33Z",
    "title_canon_sha256": "46b25c64eb36279dec42f5eabf90dc9e7bc4141d8ca24b693851f89c52792454"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4359",
    "kind": "arxiv",
    "version": 2
  }
}