Pith Number

pith:GNOAYPEA

pith:2018:GNOAYPEAMAMEBZCJFUTC6ZE5BH

not attested not anchored not stored refs pending

Distributionally Robust Inverse Covariance Estimation: The Wasserstein Shrinkage Estimator

Daniel Kuhn, Peyman Mohajerin Esfahani, Viet Anh Nguyen

arxiv:1805.07194 v1 · 2018-05-18 · math.OC · q-fin.PM · 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{GNOAYPEAMAMEBZCJFUTC6ZE5BH}

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	2026-05-18T00:15:38.979272Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

335c0c3c80601840e4492d262f649d09d0bfbcd6872616d9e25aa9df9fa97abc

Aliases

arxiv: 1805.07194 · arxiv_version: 1805.07194v1 · doi: 10.48550/arxiv.1805.07194 · pith_short_12: GNOAYPEAMAME · pith_short_16: GNOAYPEAMAMEBZCJ · pith_short_8: GNOAYPEA

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/GNOAYPEAMAMEBZCJFUTC6ZE5BH \
  | 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: 335c0c3c80601840e4492d262f649d09d0bfbcd6872616d9e25aa9df9fa97abc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78c99010bf7692983819dafd2c8cad22a6f17f801b6c1103d6bd63206bca8e00",
    "cross_cats_sorted": [
      "q-fin.PM",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-05-18T13:24:53Z",
    "title_canon_sha256": "f78619911e4cce64acc194dfa4000c1fb077cedafd25ba18222f49b32fedaaeb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.07194",
    "kind": "arxiv",
    "version": 1
  }
}