Pith Number

pith:OZV7L56J

pith:2013:OZV7L56J2FA5MDVVIQHR3K2TSD

not attested not anchored not stored refs pending

Variable Selection in Causal Inference Using Penalization

Ashkan Ertefaie, David A. Stephens, Masoud Asgharian

arxiv:1311.1283 v2 · 2013-11-06 · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OZV7L56J2FA5MDVVIQHR3K2TSD}

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	2026-05-18T02:50:24.269800Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

766bf5f7c9d141d60eb5440f1dab5390df61725f0cb04b794daec76984a7aa9b

Aliases

arxiv: 1311.1283 · arxiv_version: 1311.1283v2 · doi: 10.48550/arxiv.1311.1283 · pith_short_12: OZV7L56J2FA5 · pith_short_16: OZV7L56J2FA5MDVV · pith_short_8: OZV7L56J

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/OZV7L56J2FA5MDVVIQHR3K2TSD \
  | 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: 766bf5f7c9d141d60eb5440f1dab5390df61725f0cb04b794daec76984a7aa9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63f66cd77711f14f5b69a5ef9cb6bedce3b003882de17f4c69c1e7e02f15872f",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2013-11-06T03:33:52Z",
    "title_canon_sha256": "8127dfd4db2a223e18baeb0c0edf04fa4e65643b23fd5fe0f4b5362baa8b5153"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1283",
    "kind": "arxiv",
    "version": 2
  }
}