Pith Number

pith:2QK2XJGA

pith:2014:2QK2XJGAMLAQMPMTMEBPCJEFCJ

not attested not anchored not stored refs pending

Orthogonal Polynomials for Seminonparametric Instrumental Variables Model

Nese Yildiz, Yevgeniy Kovchegov

arxiv:1409.1620 v1 · 2014-09-04 · math.ST · q-fin.EC · stat.AP · 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{2QK2XJGAMLAQMPMTMEBPCJEFCJ}

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	2026-05-18T02:43:25.644306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d415aba4c062c1063d936102f12485125535a9d222f8f4bd68eaaa83d0c72660

Aliases

arxiv: 1409.1620 · arxiv_version: 1409.1620v1 · doi: 10.48550/arxiv.1409.1620 · pith_short_12: 2QK2XJGAMLAQ · pith_short_16: 2QK2XJGAMLAQMPMT · pith_short_8: 2QK2XJGA

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/2QK2XJGAMLAQMPMTMEBPCJEFCJ \
  | 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: d415aba4c062c1063d936102f12485125535a9d222f8f4bd68eaaa83d0c72660

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c0c4bb7150ad5e485c9a1c6be60ff31c311e55ac1e697d65d4d261fbef6d3f1",
    "cross_cats_sorted": [
      "q-fin.EC",
      "stat.AP",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2014-09-04T21:43:29Z",
    "title_canon_sha256": "288dfaa127ebae6fc4149553c6e0b47a11dc0ded3fec36a3b3de6e5d3414052a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.1620",
    "kind": "arxiv",
    "version": 1
  }
}