Pith Number

pith:FTPXLM6Y

pith:2021:FTPXLM6Y6DX26FWQW2S7QTM2ZW

not attested not anchored not stored refs pending

Learning dynamical systems from data: A simple cross-validation perspective, part III: Irregularly-Sampled Time Series

Boumediene Hamzi, Edward De Brouwer, Houman Owhadi, Jonghyeon Lee

arxiv:2111.13037 v2 · 2021-11-25 · stat.ML · cs.LG · math.DS · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FTPXLM6Y6DX26FWQW2S7QTM2ZW}

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	2026-07-05T09:15:25.356810Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cdf75b3d8f0efaf16d0b6a5f84d9acdb2edfe22d5de7f84cc48ddd67aaccce4

Aliases

arxiv: 2111.13037 · arxiv_version: 2111.13037v2 · doi: 10.48550/arxiv.2111.13037 · pith_short_12: FTPXLM6Y6DX2 · pith_short_16: FTPXLM6Y6DX26FWQ · pith_short_8: FTPXLM6Y

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/FTPXLM6Y6DX26FWQW2S7QTM2ZW \
  | 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: 2cdf75b3d8f0efaf16d0b6a5f84d9acdb2edfe22d5de7f84cc48ddd67aaccce4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19079aea36a5d8290ae2d4b7b355acd0b9c2f765ca2deeab0c888e0893bb1c32",
    "cross_cats_sorted": [
      "cs.LG",
      "math.DS",
      "stat.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2021-11-25T11:45:40Z",
    "title_canon_sha256": "49b5f7b4f5f9af5798fcc4556853646ea6db47bb41158a16a77fc8a719c27ea1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.13037",
    "kind": "arxiv",
    "version": 2
  }
}