Pith Number

pith:4Q7JUXJS

pith:2014:4Q7JUXJSSC5UTDG3P6N34PLTNU

not attested not anchored not stored refs pending

Homotopy based algorithms for $\ell_0$-regularized least-squares

Charles Soussen, David Brie, J\'er\^ome Idier, Junbo Duan

arxiv:1406.4802 v2 · 2014-01-31 · cs.NA · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4Q7JUXJSSC5UTDG3P6N34PLTNU}

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	2026-05-18T02:00:59.032646Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e43e9a5d3290bb498cdb7f9bbe3d736d0af8548d3532e3af350a90d0b4e2b165

Aliases

arxiv: 1406.4802 · arxiv_version: 1406.4802v2 · doi: 10.48550/arxiv.1406.4802 · pith_short_12: 4Q7JUXJSSC5U · pith_short_16: 4Q7JUXJSSC5UTDG3 · pith_short_8: 4Q7JUXJS

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/4Q7JUXJSSC5UTDG3P6N34PLTNU \
  | 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: e43e9a5d3290bb498cdb7f9bbe3d736d0af8548d3532e3af350a90d0b4e2b165

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67fc5050d78439728e8723b99e958b53daadc7860d3688ab3c7b0322bc7e1c79",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2014-01-31T22:26:17Z",
    "title_canon_sha256": "ea3e1f927ca952206682120f2c0899e4478e3f733d3d94edf5930f4bb7926df1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.4802",
    "kind": "arxiv",
    "version": 2
  }
}