Pith Number

pith:6GQ2GIPM

pith:2018:6GQ2GIPMDCFHBLTSKILPJ6D4I3

not attested not anchored not stored refs pending

Conditional Model Selection in Mixed-Effects Models with cAIC4

Benjamin S\"afken, David R\"ugamer, Sonja Greven, Thomas Kneib

arxiv:1803.05664 v2 · 2018-03-15 · stat.CO · 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{6GQ2GIPMDCFHBLTSKILPJ6D4I3}

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	2026-05-18T00:20:46.127096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1a1a321ec188a70ae725216f4f87c46f7bfb79b9b4d97ce34745b72699f6c76

Aliases

arxiv: 1803.05664 · arxiv_version: 1803.05664v2 · doi: 10.48550/arxiv.1803.05664 · pith_short_12: 6GQ2GIPMDCFH · pith_short_16: 6GQ2GIPMDCFHBLTS · pith_short_8: 6GQ2GIPM

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/6GQ2GIPMDCFHBLTSKILPJ6D4I3 \
  | 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: f1a1a321ec188a70ae725216f4f87c46f7bfb79b9b4d97ce34745b72699f6c76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "690d3843ea9d47e859057b1d1109993028cc707fce0a82721f723268cebf7ba7",
    "cross_cats_sorted": [
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2018-03-15T09:57:21Z",
    "title_canon_sha256": "23e2a5944f63cf9ed4cd757fb57433059f11443bcc88fdd4cc021711b1dadd28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.05664",
    "kind": "arxiv",
    "version": 2
  }
}