Pith Number

pith:KBW6C5VR

pith:2025:KBW6C5VRB64VYSWCUWGT43TCOF

not attested not anchored not stored refs pending

Machine Learning-based quadratic closures for non-intrusive Reduced Order Models

Anna Ivagnes, Gabriele Codega, Gianluigi Rozza, Nicola Demo

arxiv:2506.09830 v2 · 2025-06-11 · 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{KBW6C5VRB64VYSWCUWGT43TCOF}

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	2026-05-26T02:05:00.651998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

506de176b10fb95c4ac2a58d3e6e627179557201a7a1bfdd2be4e000dc1bf325

Aliases

arxiv: 2506.09830 · arxiv_version: 2506.09830v2 · doi: 10.48550/arxiv.2506.09830 · pith_short_12: KBW6C5VRB64V · pith_short_16: KBW6C5VRB64VYSWC · pith_short_8: KBW6C5VR

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/KBW6C5VRB64VYSWCUWGT43TCOF \
  | 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: 506de176b10fb95c4ac2a58d3e6e627179557201a7a1bfdd2be4e000dc1bf325

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b469ba7ffbf1644c5887ad92733410fccc0183503cc54c6b8198620b1350b255",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-06-11T15:10:02Z",
    "title_canon_sha256": "8d0c001883e75a9b0cc535499fb95bcddc64ed2392d62b52d11a932b62ca571f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.09830",
    "kind": "arxiv",
    "version": 2
  }
}