Pith Number

pith:FEPCJC2K

pith:2023:FEPCJC2K2XDU3AHRLWVGXDHIXC

not attested not anchored not stored refs pending

Improving Estimation of the Koopman Operator with Kolmogorov-Smirnov Indicator Functions

Danny Perez, Van A. Ngo, Yen Ting Lin

arxiv:2306.05945 v1 · 2023-06-09 · physics.data-an · physics.bio-ph · physics.comp-ph · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FEPCJC2K2XDU3AHRLWVGXDHIXC}

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	2026-07-05T06:57:54.006521Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

291e248b4ad5c74d80f15daa6b8ce8b8b88aa6114805f2580e5e8a239433fa31

Aliases

arxiv: 2306.05945 · arxiv_version: 2306.05945v1 · doi: 10.48550/arxiv.2306.05945 · pith_short_12: FEPCJC2K2XDU · pith_short_16: FEPCJC2K2XDU3AHR · pith_short_8: FEPCJC2K

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/FEPCJC2K2XDU3AHRLWVGXDHIXC \
  | 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: 291e248b4ad5c74d80f15daa6b8ce8b8b88aa6114805f2580e5e8a239433fa31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a90582a7cfe7ca63e0de8a352b53d4f56db059107d224edccd1e4198c0e364fd",
    "cross_cats_sorted": [
      "physics.bio-ph",
      "physics.comp-ph",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2023-06-09T15:01:43Z",
    "title_canon_sha256": "b7ebea178a710a7cb28699a5a036d64e0a24f9d5350a24ac3113387496f444bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2306.05945",
    "kind": "arxiv",
    "version": 1
  }
}