Pith Number

pith:VP3JAFLB

pith:2018:VP3JAFLBPQYCWCQQWJHFFPMQA7

not attested not anchored not stored refs pending

Knowledge-Aided Normalized Iterative Hard Thresholding Algorithms and Applications to Sparse Reconstruction

R. C. de Lamare

arxiv:1809.09281 v1 · 2018-09-25 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VP3JAFLBPQYCWCQQWJHFFPMQA7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:04:53.838514Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abf69015617c302b0a10b24e52bd9007ddb4c605e66b3a7fed6a1fb70930aa56

Aliases

arxiv: 1809.09281 · arxiv_version: 1809.09281v1 · doi: 10.48550/arxiv.1809.09281 · pith_short_12: VP3JAFLBPQYC · pith_short_16: VP3JAFLBPQYCWCQQ · pith_short_8: VP3JAFLB

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/VP3JAFLBPQYCWCQQWJHFFPMQA7 \
  | 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: abf69015617c302b0a10b24e52bd9007ddb4c605e66b3a7fed6a1fb70930aa56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "524c76f39898d005f63a082b6d43a8df15d62ebd68bf68c95d5c34691c0044e5",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-09-25T01:46:01Z",
    "title_canon_sha256": "468dcbce32694fc7df23b39684a7e69f856af40cb3bcf04aaf13ec9788ed9028"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.09281",
    "kind": "arxiv",
    "version": 1
  }
}