Pith Number

pith:JSFH6W4K

pith:2016:JSFH6W4KOJNV5K3BQFLJKUXVKX

not attested not anchored not stored refs pending

On the Non-Existence of Unbiased Estimators in Constrained Estimation Problems

Amir Leshem, Anelia Somekh-Baruch, Venkatesh Saligrama

arxiv:1609.07415 v1 · 2016-09-23 · math.ST · cs.IT · math.IT · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JSFH6W4KOJNV5K3BQFLJKUXVKX}

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	2026-05-18T01:04:00.916240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c8a7f5b8a725b5eab6181569552f555f68967912b50bd846ea7c5df6e796586

Aliases

arxiv: 1609.07415 · arxiv_version: 1609.07415v1 · doi: 10.48550/arxiv.1609.07415 · pith_short_12: JSFH6W4KOJNV · pith_short_16: JSFH6W4KOJNV5K3B · pith_short_8: JSFH6W4K

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/JSFH6W4KOJNV5K3BQFLJKUXVKX \
  | 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: 4c8a7f5b8a725b5eab6181569552f555f68967912b50bd846ea7c5df6e796586

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a2406b69d48a1b525729616e1262be99b3b4484456c336ce1b5b1e2724ace31",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2016-09-23T16:15:47Z",
    "title_canon_sha256": "5d02912f29db6e47f6ad7403eb4050ce1bbbf693f204cb1135e0a8b2e4af5c33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.07415",
    "kind": "arxiv",
    "version": 1
  }
}