Pith Number

pith:33BXXX52

pith:2019:33BXXX526CQIEVEJIZCGB6NTZM

not attested not anchored not stored refs pending

Data-driven discovery of partial differential equation models with latent variables

Patrick A.K. Reinbold, Roman O. Grigoriev

arxiv:1904.04314 v1 · 2019-04-05 · 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{33BXXX526CQIEVEJIZCGB6NTZM}

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	2026-06-04T20:14:23.887683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dec37bdfbaf0a0825489464460f9b3cb1a6351e0d5fbd48747a01166bf6aed8d

Aliases

arxiv: 1904.04314 · arxiv_version: 1904.04314v1 · doi: 10.48550/arxiv.1904.04314 · pith_short_12: 33BXXX526CQI · pith_short_16: 33BXXX526CQIEVEJ · pith_short_8: 33BXXX52

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/33BXXX526CQIEVEJIZCGB6NTZM \
  | 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: dec37bdfbaf0a0825489464460f9b3cb1a6351e0d5fbd48747a01166bf6aed8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "057654a4bc330c7b2ad011132988b9f69b0064bb88f48a18b65b833bbfd74451",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-04-05T13:17:20Z",
    "title_canon_sha256": "6a51376de72139a4e85db8228afe05677274842996c5468027864c3de91a1ed7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.04314",
    "kind": "arxiv",
    "version": 1
  }
}