Pith Number

pith:XGLPTYKK

pith:2016:XGLPTYKKULVZOAFN4HJZS3OJY6

not attested not anchored not stored refs pending

Alternating direction algorithms for $\ell_0$ regularization in compressed sensing

Chaobing Song, Shu-Tao Xia

arxiv:1604.04424 v1 · 2016-04-15 · 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{XGLPTYKKULVZOAFN4HJZS3OJY6}

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	2026-05-18T01:17:04.107286Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b996f9e14aa2eb9700ade1d3996dc9c7b1bcde6ecdcb00cd6d7698841e37590c

Aliases

arxiv: 1604.04424 · arxiv_version: 1604.04424v1 · doi: 10.48550/arxiv.1604.04424 · pith_short_12: XGLPTYKKULVZ · pith_short_16: XGLPTYKKULVZOAFN · pith_short_8: XGLPTYKK

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/XGLPTYKKULVZOAFN4HJZS3OJY6 \
  | 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: b996f9e14aa2eb9700ade1d3996dc9c7b1bcde6ecdcb00cd6d7698841e37590c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a3475c175b1ac5a7ed47296da30838dad0f569961d39ee0c848dbcb7528976f",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2016-04-15T10:42:22Z",
    "title_canon_sha256": "ed76379824fd3b072c1d621ed5fbf8a1d477bdf96f31eb7d3900087ec84e4622"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.04424",
    "kind": "arxiv",
    "version": 1
  }
}