Pith Number

pith:24WMWLEW

pith:2021:24WMWLEWD3LL6VSUAW6L6TGSB2

not attested not anchored not stored refs pending

Design-Robust Two-Way-Fixed-Effects Regression For Panel Data

Dmitry Arkhangelsky, Guido W. Imbens, Lihua Lei, Xiaoman Luo

arxiv:2107.13737 v3 · 2021-07-29 · econ.EM · econ.GN · q-fin.EC · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{24WMWLEWD3LL6VSUAW6L6TGSB2}

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.

Cited by

1 paper in Pith

Identification of dynamic treatment effects when treatment histories are partially observed

Receipt and verification

First computed	2026-07-05T07:52:06.470750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d72ccb2c961ed6bf565405bcbf4cd20ea363460e199fb99b645be30fc8709d42

Aliases

arxiv: 2107.13737 · arxiv_version: 2107.13737v3 · doi: 10.48550/arxiv.2107.13737 · pith_short_12: 24WMWLEWD3LL · pith_short_16: 24WMWLEWD3LL6VSU · pith_short_8: 24WMWLEW

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/24WMWLEWD3LL6VSUAW6L6TGSB2 \
  | 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: d72ccb2c961ed6bf565405bcbf4cd20ea363460e199fb99b645be30fc8709d42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59a6e669856d4a4dd6e53b2969983d4195a7156dba3f2802a54676bcd10ffeb5",
    "cross_cats_sorted": [
      "econ.GN",
      "q-fin.EC",
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2021-07-29T04:09:57Z",
    "title_canon_sha256": "3d41cee694a142f4383c573d5338404983f47908334a28c8515901df1f40efc1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.13737",
    "kind": "arxiv",
    "version": 3
  }
}