Pith Number

pith:H3J6ZG27

pith:2026:H3J6ZG27EGMRQXB56BKWSKCSFQ

not attested not anchored not stored refs pending

Estimating Semiparametric and Nonparametric Fixed Effects Panel Data Models with mgcv

Ivan Korolev

arxiv:2606.12739 v1 · 2026-06-10 · econ.EM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H3J6ZG27EGMRQXB56BKWSKCSFQ}

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	2026-06-12T01:08:48.591200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ed3ec9b5f2199185c3df0556928522c292c94a42e8bc1ce09fd94ad848369ba

Aliases

arxiv: 2606.12739 · arxiv_version: 2606.12739v1 · doi: 10.48550/arxiv.2606.12739 · pith_short_12: H3J6ZG27EGMR · pith_short_16: H3J6ZG27EGMRQXB5 · pith_short_8: H3J6ZG27

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/H3J6ZG27EGMRQXB56BKWSKCSFQ \
  | 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: 3ed3ec9b5f2199185c3df0556928522c292c94a42e8bc1ce09fd94ad848369ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a15345c7bd4b1b8d48962427beb73a7bb1f1ec5e5895a8cfe08d0b26419afcde",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2026-06-10T22:59:03Z",
    "title_canon_sha256": "07ed4c8ae928236bfe7d5a22a50cbc75f1999a1906b8b430fd61e27e67c9393f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.12739",
    "kind": "arxiv",
    "version": 1
  }
}