Pith Number

pith:KJOQWDRC

pith:2012:KJOQWDRCEHMCEH4XJ7X7EBKKPD

not attested not anchored not stored refs pending

The degrees of freedom of the Group Lasso for a General Design

Charles Deledalle (CEREMADE), Charles Dossal (IMB), Gabriel Peyr\'e (CEREMADE), Jalal Fadili (GREYC), Samuel Vaiter (CEREMADE)

arxiv:1212.6478 v1 · 2012-12-28 · 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{KJOQWDRCEHMCEH4XJ7X7EBKKPD}

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	2026-05-18T03:37:39.605705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

525d0b0e2221d8221f974feff2054a78cdfc5e066853693eb011a9caedbe3804

Aliases

arxiv: 1212.6478 · arxiv_version: 1212.6478v1 · doi: 10.48550/arxiv.1212.6478 · pith_short_12: KJOQWDRCEHMC · pith_short_16: KJOQWDRCEHMCEH4X · pith_short_8: KJOQWDRC

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/KJOQWDRCEHMCEH4XJ7X7EBKKPD \
  | 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: 525d0b0e2221d8221f974feff2054a78cdfc5e066853693eb011a9caedbe3804

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a42f2be291391bfeeac5ac41efb39973dc41437c9284ecb0d4d44b0f332475d9",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-12-28T07:11:10Z",
    "title_canon_sha256": "2d163245b7948cfb8e50b42b1ec252f1a74cdfd6de14fb03e750094f49eaf7bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.6478",
    "kind": "arxiv",
    "version": 1
  }
}