Pith Number

pith:VZNDRWWI

pith:2013:VZNDRWWIUOKDM7S4GULJH64C2M

not attested not anchored not stored refs pending

Iterative Hard Thresholding for Weighted Sparse Approximation

Jason Jo

arxiv:1312.3582 v4 · 2013-12-12 · cs.IT · math.IT · 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{VZNDRWWIUOKDM7S4GULJH64C2M}

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.

Cited by

1 paper in Pith

Deep greedy unfolding: Sorting out argsorting in greedy sparse recovery algorithms

Receipt and verification

First computed	2026-05-18T02:29:53.691449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae5a38dac8a394367e5c351693fb82d33df83fdde4994f8170c32b7baff58669

Aliases

arxiv: 1312.3582 · arxiv_version: 1312.3582v4 · doi: 10.48550/arxiv.1312.3582 · pith_short_12: VZNDRWWIUOKD · pith_short_16: VZNDRWWIUOKDM7S4 · pith_short_8: VZNDRWWI

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/VZNDRWWIUOKDM7S4GULJH64C2M \
  | 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: ae5a38dac8a394367e5c351693fb82d33df83fdde4994f8170c32b7baff58669

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cde492f6005578ccd44cb915befd0ffe5b316cc7375b9f9bcbbcb62216cdf1f2",
    "cross_cats_sorted": [
      "math.IT",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-12-12T18:39:21Z",
    "title_canon_sha256": "9418ab9d39e7a69617d38df120f627aa6ae0f24827041d3bd33700f825b15108"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.3582",
    "kind": "arxiv",
    "version": 4
  }
}