Pith Number

pith:4EUEGPTM

pith:2012:4EUEGPTM6FOZKE6QVXYERNPZCA

not attested not anchored not stored refs pending

On the Lagrangian Biduality of Sparsity Minimization Problems

Allen Y. Yang, Dheeraj Singaraju, Ehsan Elhamifar, Roberto Tron, S. Shankar Sastry

arxiv:1201.3674 v1 · 2012-01-18 · cs.CV · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4EUEGPTM6FOZKE6QVXYERNPZCA}

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	2026-05-18T04:04:18.351222Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e128433e6cf15d9513d0adf048b5f9101c99d4364990f394dde1e07128c1bc10

Aliases

arxiv: 1201.3674 · arxiv_version: 1201.3674v1 · doi: 10.48550/arxiv.1201.3674 · pith_short_12: 4EUEGPTM6FOZ · pith_short_16: 4EUEGPTM6FOZKE6Q · pith_short_8: 4EUEGPTM

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/4EUEGPTM6FOZKE6QVXYERNPZCA \
  | 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: e128433e6cf15d9513d0adf048b5f9101c99d4364990f394dde1e07128c1bc10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8098c3b453ff4099e5f968044fe70014c8dd4d7fe1f285cb46fb96fdcbed9e2",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-01-18T00:46:12Z",
    "title_canon_sha256": "6e919513235f0700981429aeeddc52073ab0d3695240fe71f8531814946aaa63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3674",
    "kind": "arxiv",
    "version": 1
  }
}