Pith Number

pith:XZYW7LQG

pith:2015:XZYW7LQG2U7SICMRGRCSV5B3WG

not attested not anchored not stored refs pending

Joint Inverse Covariances Estimation with Mutual Linear Structure

Ami Wiesel, Ilya Soloveychik

arxiv:1511.06462 v1 · 2015-11-20 · stat.ML · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XZYW7LQG2U7SICMRGRCSV5B3WG}

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	2026-05-18T01:26:24.469524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be716fae06d53f24099134452af43bb1bc92c30ab9447b6236a83e298147b6da

Aliases

arxiv: 1511.06462 · arxiv_version: 1511.06462v1 · doi: 10.48550/arxiv.1511.06462 · pith_short_12: XZYW7LQG2U7S · pith_short_16: XZYW7LQG2U7SICMR · pith_short_8: XZYW7LQG

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/XZYW7LQG2U7SICMRGRCSV5B3WG \
  | 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: be716fae06d53f24099134452af43bb1bc92c30ab9447b6236a83e298147b6da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69c4fd72054bb2e7fccd740d140395099168bfd75c059c0cf76cd4109cb33f05",
    "cross_cats_sorted": [
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2015-11-20T00:18:12Z",
    "title_canon_sha256": "374a41d7438f4d3992f58962cc855cbb8cff454d19e26268aed2cd0d5abe0d04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.06462",
    "kind": "arxiv",
    "version": 1
  }
}