Pith Number

pith:UIRY6GVM

pith:2025:UIRY6GVMS3MP42TXFZSUNU5P6E

not attested not anchored not stored refs pending

S$^2$GPT-PINNs: Sparse and Small models for PDEs

Shawn Koohy, Yajie Ji, Yanlai Chen

arxiv:2506.15687 v1 · 2025-05-25 · cs.LG · 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{UIRY6GVMS3MP42TXFZSUNU5P6E}

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	2026-07-05T11:23:50.272401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2238f1aac96d8fe6a772e6546d3aff12747b74a26d01a5b19721d4053d072b3

Aliases

arxiv: 2506.15687 · arxiv_version: 2506.15687v1 · doi: 10.48550/arxiv.2506.15687 · pith_short_12: UIRY6GVMS3MP · pith_short_16: UIRY6GVMS3MP42TX · pith_short_8: UIRY6GVM

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/UIRY6GVMS3MP42TXFZSUNU5P6E \
  | 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: a2238f1aac96d8fe6a772e6546d3aff12747b74a26d01a5b19721d4053d072b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "050a67285e50dd59dee1540f38b43dd2d9d461238aa0b79d65c8a8e585c09e2b",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-05-25T14:03:10Z",
    "title_canon_sha256": "2bdc36cfdd860a2e4cbd5a563a1eb43b9daf705a020a459b0075d32aacb030b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.15687",
    "kind": "arxiv",
    "version": 1
  }
}