Pith Number

pith:O3SWPILG

pith:2018:O3SWPILGKRZ3N2BLGR37TYGF6U

not attested not anchored not stored refs pending

Large-Scale Sparse Inverse Covariance Estimation via Thresholding and Max-Det Matrix Completion

Richard Y. Zhang, Salar Fattahi, Somayeh Sojoudi

arxiv:1802.04911 v3 · 2018-02-14 · stat.ML · cs.LG · math.OC · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O3SWPILGKRZ3N2BLGR37TYGF6U}

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	2026-05-18T00:14:00.265014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76e567a1665473b6e82b3477f9e0c5f526f0e131a6d4734d211a662306d08831

Aliases

arxiv: 1802.04911 · arxiv_version: 1802.04911v3 · doi: 10.48550/arxiv.1802.04911 · pith_short_12: O3SWPILGKRZ3 · pith_short_16: O3SWPILGKRZ3N2BL · pith_short_8: O3SWPILG

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/O3SWPILGKRZ3N2BLGR37TYGF6U \
  | 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: 76e567a1665473b6e82b3477f9e0c5f526f0e131a6d4734d211a662306d08831

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cc49f38b2f2e3a46e79bc8ba26fc7fbbc3277eea08ccc6b06668aec64911cf5",
    "cross_cats_sorted": [
      "cs.LG",
      "math.OC",
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2018-02-14T01:00:10Z",
    "title_canon_sha256": "179557de8f240bde1f072396e22315f8056b33e287bfebc198763c4cda3addba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.04911",
    "kind": "arxiv",
    "version": 3
  }
}