Pith Number

pith:BKDZQQRH

pith:2020:BKDZQQRHEM65PNMF6RJQMRYIMA

not attested not anchored not stored refs pending

Weak SINDy: Galerkin-Based Data-Driven Model Selection

Daniel A. Messenger, David M. Bortz

arxiv:2005.04339 v3 · 2020-05-09 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BKDZQQRHEM65PNMF6RJQMRYIMA}

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.

Cited by

2 papers in Pith

Flow map learning in nonlinear vector autoregressive models: influence of the feature-library structure on the training error

Learning a Stochastic Differential Equation Model of Tropical Cyclone Intensification from Reanalysis and Observational Data

Receipt and verification

First computed	2026-07-05T04:19:00.323792Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a87984227233dd7b585f453064708600af8d7e00822d1489fe09572a8a90cfc

Aliases

arxiv: 2005.04339 · arxiv_version: 2005.04339v3 · doi: 10.48550/arxiv.2005.04339 · pith_short_12: BKDZQQRHEM65 · pith_short_16: BKDZQQRHEM65PNMF · pith_short_8: BKDZQQRH

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/BKDZQQRHEM65PNMF6RJQMRYIMA \
  | 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: 0a87984227233dd7b585f453064708600af8d7e00822d1489fe09572a8a90cfc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39e85c8d605c91b51df12bc9f761389c36849f72d641f4cb8dc268c20b95710a",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-05-09T01:45:32Z",
    "title_canon_sha256": "279ee28687bcad0f8f73db98e1c9ccaa19e5da49037f6910b2c8ae8b188c8a36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.04339",
    "kind": "arxiv",
    "version": 3
  }
}