Pith Number

pith:Q7SPSIDX

pith:2014:Q7SPSIDXGTZ2QYMF4TSIZD63Q5

not attested not anchored not stored refs pending

Balancing Sparsity and Rank Constraints in Quadratic Basis Pursuit

Cagdas Bilen (INRIA - IRISA), Gilles Puy, Laurent Daudet, R\'emi Gribonval (INRIA - IRISA)

arxiv:1403.4267 v2 · 2014-03-17 · 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{Q7SPSIDXGTZ2QYMF4TSIZD63Q5}

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	2026-05-18T02:56:04.824743Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87e4f9207734f3a86185e4e48c8fdb87717d5c6120758688b7c04351ea020245

Aliases

arxiv: 1403.4267 · arxiv_version: 1403.4267v2 · doi: 10.48550/arxiv.1403.4267 · pith_short_12: Q7SPSIDXGTZ2 · pith_short_16: Q7SPSIDXGTZ2QYMF · pith_short_8: Q7SPSIDX

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/Q7SPSIDXGTZ2QYMF4TSIZD63Q5 \
  | 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: 87e4f9207734f3a86185e4e48c8fdb87717d5c6120758688b7c04351ea020245

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e50cb91353b5988082138c551794df0cf210b382dea89fe28d44a8c6f0919954",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2014-03-17T20:34:18Z",
    "title_canon_sha256": "4bc24cb877807bde09a9acf10bba7b177596943bb0d01c7a5a3d28273be50a4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.4267",
    "kind": "arxiv",
    "version": 2
  }
}