Pith Number

pith:BPU2SYER

pith:2025:BPU2SYER3G6G4MRA5C3BJ3IGPI

not attested not anchored not stored refs pending

Tactics for Improving Least Squares Estimation

Hua Zhou, Kenneth Lange, Qiang Heng

arxiv:2501.02475 v2 · 2025-01-05 · stat.CO · 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{BPU2SYER3G6G4MRA5C3BJ3IGPI}

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	2026-05-20T00:02:47.835030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0be9a96091d9bc6e3220e8b614ed067a076cd94c37636b94471841159937e722

Aliases

arxiv: 2501.02475 · arxiv_version: 2501.02475v2 · doi: 10.48550/arxiv.2501.02475 · pith_short_12: BPU2SYER3G6G · pith_short_16: BPU2SYER3G6G4MRA · pith_short_8: BPU2SYER

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/BPU2SYER3G6G4MRA5C3BJ3IGPI \
  | 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: 0be9a96091d9bc6e3220e8b614ed067a076cd94c37636b94471841159937e722

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9977b620c8d8c1f3e12f9aa15358cf18fa5360d23df1af8ca2d50f1414d65078",
    "cross_cats_sorted": [
      "stat.ME"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2025-01-05T08:18:58Z",
    "title_canon_sha256": "191372b2d2e3230e003ceadc89343fd13314e78a7ee418f1297c52a04a3857d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.02475",
    "kind": "arxiv",
    "version": 2
  }
}