Pith Number

pith:UTDMJYMI

pith:2011:UTDMJYMI22YQU7B7L4QNHCTUV6

not attested not anchored not stored refs pending

Estimating composite functions by model selection

Lucien Birg\'e, Yannick Baraud

arxiv:1102.2818 v2 · 2011-02-14 · math.ST · 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{UTDMJYMI22YQU7B7L4QNHCTUV6}

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	2026-05-18T03:35:26.412783Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4c6c4e188d6b10a7c3f5f20d38a74af9e5e3e0e6ebbc537b0f80cb6b8f4d924

Aliases

arxiv: 1102.2818 · arxiv_version: 1102.2818v2 · doi: 10.48550/arxiv.1102.2818 · pith_short_12: UTDMJYMI22YQ · pith_short_16: UTDMJYMI22YQU7B7 · pith_short_8: UTDMJYMI

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/UTDMJYMI22YQU7B7L4QNHCTUV6 \
  | 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: a4c6c4e188d6b10a7c3f5f20d38a74af9e5e3e0e6ebbc537b0f80cb6b8f4d924

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "754cdf94f41afc95ecf35598e147f97e29d87ce16d56e292e4a6a661dc374dc9",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2011-02-14T16:24:41Z",
    "title_canon_sha256": "b8f5b3e598b10c4b34b0133a178e2851c41e539ff23c44bf80c7d6f8d89c331b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.2818",
    "kind": "arxiv",
    "version": 2
  }
}