Pith Number

pith:E7DKCUPN

pith:2013:E7DKCUPNUL2PILRNZD5FF3CJ44

not attested not anchored not stored refs pending

Iterative Estimation of Solutions to Noisy Nonlinear Operator Equations in Nonparametric Instrumental Regression

Enno Mammen, Fabian Dunker, Jan Johannes, Jean-Pierre Florens, Thorsten Hohage

arxiv:1307.6701 v1 · 2013-07-25 · math.NA · math.ST · stat.CO · 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{E7DKCUPNUL2PILRNZD5FF3CJ44}

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	2026-05-18T02:20:00.488591Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27c6a151eda2f4f42e2dc8fa52ec49e73813565497b6171f94905957b637d861

Aliases

arxiv: 1307.6701 · arxiv_version: 1307.6701v1 · doi: 10.48550/arxiv.1307.6701 · pith_short_12: E7DKCUPNUL2P · pith_short_16: E7DKCUPNUL2PILRN · pith_short_8: E7DKCUPN

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/E7DKCUPNUL2PILRNZD5FF3CJ44 \
  | 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: 27c6a151eda2f4f42e2dc8fa52ec49e73813565497b6171f94905957b637d861

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cbc0c16ffbc626cf75fe4782d5dede23accc95c741e86021f3898ee5f034dbf",
    "cross_cats_sorted": [
      "math.ST",
      "stat.CO",
      "stat.ME",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-07-25T11:25:11Z",
    "title_canon_sha256": "d0cf6e2c50b9411a5f32a7d0f301486b78d4fa379ebb35217f22a148f0616343"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.6701",
    "kind": "arxiv",
    "version": 1
  }
}