Pith Number

pith:WYYZ3PIB

pith:2013:WYYZ3PIBBNBEB2NM5DU2COLDIF

not attested not anchored not stored refs pending

New explicit thresholding/shrinkage formulas for one class of regularization problems with overlapping group sparsity and their applications

Gang Liu, Jun Liu, Ting-Zhu Huang, Xiao-Guang Lv

arxiv:1312.6813 v3 · 2013-12-24 · math.NA · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WYYZ3PIBBNBEB2NM5DU2COLDIF}

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	2026-05-18T02:52:14.112274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6319dbd010b4240e9ace8e9a1396341632ea1c44fd81498606a28a8cd973f7c

Aliases

arxiv: 1312.6813 · arxiv_version: 1312.6813v3 · doi: 10.48550/arxiv.1312.6813 · pith_short_12: WYYZ3PIBBNBE · pith_short_16: WYYZ3PIBBNBEB2NM · pith_short_8: WYYZ3PIB

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/WYYZ3PIBBNBEB2NM5DU2COLDIF \
  | 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: b6319dbd010b4240e9ace8e9a1396341632ea1c44fd81498606a28a8cd973f7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d44f11d71d07f19f27954c5af980e67cea73cdd37978b9640e759299fc3df5a",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-12-24T13:31:45Z",
    "title_canon_sha256": "3e3b47194b67006e5f3458b38be81e71486b73a9926f74388b1475acf94ff32b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.6813",
    "kind": "arxiv",
    "version": 3
  }
}