Pith Number

pith:XYX4UPE7

pith:2013:XYX4UPE7IDJNLW5VPIISC5IPYI

not attested not anchored not stored refs pending

Sparse/Robust Estimation and Kalman Smoothing with Nonsmooth Log-Concave Densities: Modeling, Computation, and Theory

Aleksandr Y. Aravkin, Gianluigi Pillonetto, James V. Burke

arxiv:1301.4566 v2 · 2013-01-19 · stat.ML · math.OC · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XYX4UPE7IDJNLW5VPIISC5IPYI}

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	2026-05-18T03:26:40.927248Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be2fca3c9f40d2d5dbb57a1121750fc22d32d50ed80fc2035a56542622121115

Aliases

arxiv: 1301.4566 · arxiv_version: 1301.4566v2 · doi: 10.48550/arxiv.1301.4566 · pith_short_12: XYX4UPE7IDJN · pith_short_16: XYX4UPE7IDJNLW5V · pith_short_8: XYX4UPE7

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/XYX4UPE7IDJNLW5VPIISC5IPYI \
  | 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: be2fca3c9f40d2d5dbb57a1121750fc22d32d50ed80fc2035a56542622121115

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "512702b18b1d486c413568a764e987fdead38087b18df9c6298296dba9ac5971",
    "cross_cats_sorted": [
      "math.OC",
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2013-01-19T14:46:29Z",
    "title_canon_sha256": "5eb6900ae304b4f82eb267812d57b3b3442670bf223c98f6e1440f71d9c2b650"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.4566",
    "kind": "arxiv",
    "version": 2
  }
}