Pith Number

pith:ZXO2XHJE

pith:2011:ZXO2XHJE53TWRHZHVQAMUA3HWX

not attested not anchored not stored refs pending

Sparse modeling of categorial explanatory variables

Gerhard Tutz, Jan Gertheiss

arxiv:1101.1421 v1 · 2011-01-07 · 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{ZXO2XHJE53TWRHZHVQAMUA3HWX}

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	2026-05-18T04:31:52.859196Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cdddab9d24eee7689f27ac00ca0367b5e7c89a8b816d53158bbc32b112ea168c

Aliases

arxiv: 1101.1421 · arxiv_version: 1101.1421v1 · doi: 10.48550/arxiv.1101.1421 · pith_short_12: ZXO2XHJE53TW · pith_short_16: ZXO2XHJE53TWRHZH · pith_short_8: ZXO2XHJE

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/ZXO2XHJE53TWRHZHVQAMUA3HWX \
  | 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: cdddab9d24eee7689f27ac00ca0367b5e7c89a8b816d53158bbc32b112ea168c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d5fd317aac65c78b62785d57d1478f976e06432ab49bfc7d0e1221a13c429c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2011-01-07T12:29:48Z",
    "title_canon_sha256": "5d26cce5317ffa737c8a2f10147b26494c25fd0f3b56228073b43e75da4c2959"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1421",
    "kind": "arxiv",
    "version": 1
  }
}