Pith Number

pith:UZSZRSU3

pith:2020:UZSZRSU3IAUVRHL7IX2JJALYZ3

not attested not anchored not stored refs pending

Estimation of sparse Gaussian graphical models with hidden clustering structure

Chengjing Wang, Defeng Sun, Kim-Chuan Toh, Meixia Lin

arxiv:2004.08115 v1 · 2020-04-17 · math.OC · stat.AP · stat.CO · 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{UZSZRSU3IAUVRHL7IX2JJALYZ3}

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	2026-07-05T00:55:50.232989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a66598ca9b4029589d7f45f4948178cec7accfa2c6afcee7c758ca3e5295c197

Aliases

arxiv: 2004.08115 · arxiv_version: 2004.08115v1 · doi: 10.48550/arxiv.2004.08115 · pith_short_12: UZSZRSU3IAUV · pith_short_16: UZSZRSU3IAUVRHL7 · pith_short_8: UZSZRSU3

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/UZSZRSU3IAUVRHL7IX2JJALYZ3 \
  | 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: a66598ca9b4029589d7f45f4948178cec7accfa2c6afcee7c758ca3e5295c197

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b63078246739fd3feec8eb857de08a2a7bc765b0b5db478930765a2d33aea82",
    "cross_cats_sorted": [
      "stat.AP",
      "stat.CO",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-04-17T08:43:31Z",
    "title_canon_sha256": "644b2bc03d95dc4921b91da2a4a9883ecb1d957b1fcb5f902ba541676bce45fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.08115",
    "kind": "arxiv",
    "version": 1
  }
}