Pith Number

pith:5BS2MSVC

pith:2013:5BS2MSVCALCEON5FGT75RGZDAJ

not attested not anchored not stored refs pending

Learning Heteroscedastic Models by Convex Programming under Group Sparsity

Arnak S. Dalalyan (LIGM, CREST), Joseph Salmon (TSI), Katia M\'eziani (CEREMADE), Mohamed Hebiri (LAMA)

arxiv:1304.4549 v1 · 2013-04-16 · 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{5BS2MSVCALCEON5FGT75RGZDAJ}

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	2026-05-18T03:27:52.675786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e865a64aa202c44737a534ffd89b23026d0ab481d114b6ee9f49535e0bb490c9

Aliases

arxiv: 1304.4549 · arxiv_version: 1304.4549v1 · doi: 10.48550/arxiv.1304.4549 · pith_short_12: 5BS2MSVCALCE · pith_short_16: 5BS2MSVCALCEON5F · pith_short_8: 5BS2MSVC

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/5BS2MSVCALCEON5FGT75RGZDAJ \
  | 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: e865a64aa202c44737a534ffd89b23026d0ab481d114b6ee9f49535e0bb490c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78181f86f7fb1cb62be7ee5617506d55606b4445a25109d8d897f5f8f22d9fb8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2013-04-16T18:54:37Z",
    "title_canon_sha256": "6ac050dd8ec02f258fbedd8cd5f3d6ae9959b4614c9fce6cc3b74cda50dd0570"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.4549",
    "kind": "arxiv",
    "version": 1
  }
}