Pith Number

pith:267V5OT7

pith:2015:267V5OT7W4YZDDLDVVOXMAETKA

not attested not anchored not stored refs pending

Successive Concave Sparsity Approximation for Compressed Sensing

Ali Koochakzadeh, Cristian R. Rojas, Magnus Jansson, Massoud Babaie-Zadeh, Mohammadreza Malek-Mohammadi

arxiv:1505.06841 v2 · 2015-05-26 · cs.IT · 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{267V5OT7W4YZDDLDVVOXMAETKA}

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	2026-05-18T01:00:25.900204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7bf5eba7fb731918d63ad5d760093503ee68a3041a3d1d51ffc9a2d6715bfb5

Aliases

arxiv: 1505.06841 · arxiv_version: 1505.06841v2 · doi: 10.48550/arxiv.1505.06841 · pith_short_12: 267V5OT7W4YZ · pith_short_16: 267V5OT7W4YZDDLD · pith_short_8: 267V5OT7

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/267V5OT7W4YZDDLDVVOXMAETKA \
  | 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: d7bf5eba7fb731918d63ad5d760093503ee68a3041a3d1d51ffc9a2d6715bfb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1ff0272f6b3b424b95749ce7ce271a2f94b5d61f3cae3473e4a7c68a604e299",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-05-26T08:07:32Z",
    "title_canon_sha256": "dd565ef19840b5bece0b561fb7cacde3c3c83e60480ec502e53497dd88fbe667"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.06841",
    "kind": "arxiv",
    "version": 2
  }
}