Pith Number

pith:QWW4WNWU

pith:2026:QWW4WNWURWS7KKX5OS5NF3BG3W

not attested not anchored not stored refs pending

Robust Sparse Identification of Nonlinear Dynamics via Least Trimmed Squares

Cassio M. Oishi, Fabio Amaral, Geovani N. Grapiglia

arxiv:2606.28584 v1 · 2026-06-26 · math.OC · math.DS · physics.bio-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QWW4WNWURWS7KKX5OS5NF3BG3W}

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	2026-06-30T00:15:19.818663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85adcb36d48da5f52afd74bad2ec26dd9bfafcb4c75ced60e0d5d59abf71254b

Aliases

arxiv: 2606.28584 · arxiv_version: 2606.28584v1 · doi: 10.48550/arxiv.2606.28584 · pith_short_12: QWW4WNWURWS7 · pith_short_16: QWW4WNWURWS7KKX5 · pith_short_8: QWW4WNWU

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/QWW4WNWURWS7KKX5OS5NF3BG3W \
  | 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: 85adcb36d48da5f52afd74bad2ec26dd9bfafcb4c75ced60e0d5d59abf71254b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "869d9ed6b7e9d9d7ac08c8fd1496a3a9313f77910f597643d154c105d3e51a7e",
    "cross_cats_sorted": [
      "math.DS",
      "physics.bio-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2026-06-26T20:21:28Z",
    "title_canon_sha256": "24ea5ad9c0a5153e942dc6b48fc39cd4d319424f9818886db963cf2f5fa49083"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.28584",
    "kind": "arxiv",
    "version": 1
  }
}