Pith Number

pith:27TFEHC2

pith:2019:27TFEHC2QW3F3B3FHZ7OCQO7IK

not attested not anchored not stored refs pending

Subspace Clustering for Panel Data with Interactive Effects

Hao Qu, Hon Keung Tony, Jiangtao Duan, Wei Gao

arxiv:1909.09928 v2 · 2019-09-22 · 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{27TFEHC2QW3F3B3FHZ7OCQO7IK}

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	2026-07-05T02:18:14.041989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7e6521c5a85b65d87653e7ee141df42989f7f4408228cc9d8102b8d61673a7b

Aliases

arxiv: 1909.09928 · arxiv_version: 1909.09928v2 · doi: 10.48550/arxiv.1909.09928 · pith_short_12: 27TFEHC2QW3F · pith_short_16: 27TFEHC2QW3F3B3F · pith_short_8: 27TFEHC2

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/27TFEHC2QW3F3B3FHZ7OCQO7IK \
  | 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: d7e6521c5a85b65d87653e7ee141df42989f7f4408228cc9d8102b8d61673a7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d17ce3ed2431903599bbea2eadfec755ff45acbecfb3a60062752ce910f5649",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2019-09-22T01:51:11Z",
    "title_canon_sha256": "3f150031cdc041bbf08488e08c1b26789a9c39341b7d901cfcfb997cd57e301a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.09928",
    "kind": "arxiv",
    "version": 2
  }
}