Pith Number

pith:TXY4HDEJ

pith:2018:TXY4HDEJDIFCYYUVAVJPQACG6X

not attested not anchored not stored refs pending

Local Quadratic Estimation of the Curvature in a Functional Single Index Model

Giles Hooker, Zi Ye

arxiv:1803.09321 v1 · 2018-03-25 · math.ST · stat.ME · 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{TXY4HDEJDIFCYYUVAVJPQACG6X}

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	2026-05-18T00:20:12.009521Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9df1c38c891a0a2c62950552f80046f5dfc6bdd808a748c276262aa4b3170d9b

Aliases

arxiv: 1803.09321 · arxiv_version: 1803.09321v1 · doi: 10.48550/arxiv.1803.09321 · pith_short_12: TXY4HDEJDIFC · pith_short_16: TXY4HDEJDIFCYYUV · pith_short_8: TXY4HDEJ

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/TXY4HDEJDIFCYYUVAVJPQACG6X \
  | 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: 9df1c38c891a0a2c62950552f80046f5dfc6bdd808a748c276262aa4b3170d9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35589b8cfa2f8456b1743e2621e1453e50cdc17ad96016da0ea74e57f810fea4",
    "cross_cats_sorted": [
      "stat.ME",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2018-03-25T19:48:12Z",
    "title_canon_sha256": "60aed1a919687cbb407427840ae745f7db5471132a8a277392c20b2ca505c4c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.09321",
    "kind": "arxiv",
    "version": 1
  }
}