Pith Number

pith:GAFPLD5U

pith:2016:GAFPLD5UYDAHGRHPIMXZBZJHK5

not attested not anchored not stored refs pending

Joint Estimation of Precision Matrices in Heterogeneous Populations

Ali Shojaie, Takumi Saegusa

arxiv:1601.00142 v1 · 2016-01-02 · 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{GAFPLD5UYDAHGRHPIMXZBZJHK5}

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	2026-05-18T01:23:28.344460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

300af58fb4c0c07344ef432f90e52757496145ab3f0c92f4c07db2dcbbcfe3d4

Aliases

arxiv: 1601.00142 · arxiv_version: 1601.00142v1 · doi: 10.48550/arxiv.1601.00142 · pith_short_12: GAFPLD5UYDAH · pith_short_16: GAFPLD5UYDAHGRHP · pith_short_8: GAFPLD5U

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/GAFPLD5UYDAHGRHPIMXZBZJHK5 \
  | 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: 300af58fb4c0c07344ef432f90e52757496145ab3f0c92f4c07db2dcbbcfe3d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0aeb5ea89b712f30f53ce07830ee74aa02dd11f51aecb529aa786fd6de0bd01b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2016-01-02T06:11:06Z",
    "title_canon_sha256": "1627b1955c80b875e6fb4241c7f9bc5c79f7e915457555e67c24a13f3242103b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.00142",
    "kind": "arxiv",
    "version": 1
  }
}