Pith Number

pith:ZWVYJHXW

pith:2012:ZWVYJHXWLPV3BJHYRJKOMBQDGM

not attested not anchored not stored refs pending

Efficient Estimation of Approximate Factor Models via Regularized Maximum Likelihood

Jushan Bai, Yuan Liao

arxiv:1209.5911 v2 · 2012-09-26 · 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{ZWVYJHXWLPV3BJHYRJKOMBQDGM}

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	2026-05-18T03:44:33.171983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cdab849ef65bebb0a4f88a54e60603333f5beffdd7d77e23aa75a7dcabd05665

Aliases

arxiv: 1209.5911 · arxiv_version: 1209.5911v2 · doi: 10.48550/arxiv.1209.5911 · pith_short_12: ZWVYJHXWLPV3 · pith_short_16: ZWVYJHXWLPV3BJHY · pith_short_8: ZWVYJHXW

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/ZWVYJHXWLPV3BJHYRJKOMBQDGM \
  | 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: cdab849ef65bebb0a4f88a54e60603333f5beffdd7d77e23aa75a7dcabd05665

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8da6a0024ea4d5ca686fcdc1333a040b128889f871838ae15c4e406622c0968",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2012-09-26T12:20:49Z",
    "title_canon_sha256": "ac7d21728221937fa3a96c233bf53e8e9a612044765be366c38b53dda21c401f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5911",
    "kind": "arxiv",
    "version": 2
  }
}