Pith Number

pith:J3UZA5QR

pith:2026:J3UZA5QR75X2IZQCPZ3OUQ5JLX

not attested not anchored not stored refs pending

Learning Gaussian Graphical Models under Total Positivity via Spectral Graph Sparsification

Aida Abiad, Frank R\"ottger, Ignacio Echave-Sustaeta Rodr\'iguez

arxiv:2605.17154 v1 · 2026-05-16 · stat.ME · 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{J3UZA5QR75X2IZQCPZ3OUQ5JLX}

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	2026-05-20T00:03:42.437468Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ee9907611ff6fa466027e76ea43a95df24c4fa184857f3c5ac9654ef9b7932a

Aliases

arxiv: 2605.17154 · arxiv_version: 2605.17154v1 · doi: 10.48550/arxiv.2605.17154 · pith_short_12: J3UZA5QR75X2 · pith_short_16: J3UZA5QR75X2IZQC · pith_short_8: J3UZA5QR

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/J3UZA5QR75X2IZQCPZ3OUQ5JLX \
  | 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: 4ee9907611ff6fa466027e76ea43a95df24c4fa184857f3c5ac9654ef9b7932a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "698eb3a962ca65a60bc397541e2ea6667b73247b0107e32d1a43a114ef49cbea",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2026-05-16T20:59:06Z",
    "title_canon_sha256": "b235ccff643aa88254f2f57722085707eb5df45dbcf2f04930abd85c5093def3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.17154",
    "kind": "arxiv",
    "version": 1
  }
}