Pith Number

pith:WDQNM5MY

pith:2019:WDQNM5MYK5PU5S5Q7Y22PRWD4O

not attested not anchored not stored refs pending

A comparative study of physics-informed neural network models for learning unknown dynamics and constitutive relations

Alexandre Tartakovsky, Panos Stinis, Paris Perdikaris, Ramakrishna Tipireddy

arxiv:1904.04058 v1 · 2019-04-02 · cs.LG · cs.NA · math.DS · math.NA · physics.comp-ph

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

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

1 paper in Pith

Universal Differential Equations for Scientific Machine Learning

Receipt and verification

First computed	2026-05-17T23:48:54.669302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0e0d67598575f4ecbb0fe35a7c6c3e3aeae5d2541019e498a20869166996988

Aliases

arxiv: 1904.04058 · arxiv_version: 1904.04058v1 · doi: 10.48550/arxiv.1904.04058 · pith_short_12: WDQNM5MYK5PU · pith_short_16: WDQNM5MYK5PU5S5Q · pith_short_8: WDQNM5MY

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/WDQNM5MYK5PU5S5Q7Y22PRWD4O \
  | 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: b0e0d67598575f4ecbb0fe35a7c6c3e3aeae5d2541019e498a20869166996988

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4618d502658fe24eb608fea11489f65b89589578af818f98b30c79026b71975",
    "cross_cats_sorted": [
      "cs.NA",
      "math.DS",
      "math.NA",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-04-02T23:52:29Z",
    "title_canon_sha256": "3b32ab7ce07bd4a6c27b31ebf8138b902d5d2104b37ff4247089fce1afe8bfbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.04058",
    "kind": "arxiv",
    "version": 1
  }
}