Pith Number

pith:AL7JK7XD

pith:2019:AL7JK7XDLXPB6XQVGMLHSOLK7I

not attested not anchored not stored refs pending

Efficient Reduction in Shape Parameter Space Dimension for Ship Propeller Blade Design

Andrea Mola, Davide Grassi, Federica Valdenazzi, Gianluigi Rozza, Mahmoud Gadalla, Marco Tezzele, Roberta Padovan

arxiv:1905.09815 v1 · 2019-05-15 · cs.CE · math.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{AL7JK7XDLXPB6XQVGMLHSOLK7I}

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	2026-05-17T23:45:15.986571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

02fe957ee35dde1f5e15331679396afa203c7b36ba728af340d663b53e2a5418

Aliases

arxiv: 1905.09815 · arxiv_version: 1905.09815v1 · doi: 10.48550/arxiv.1905.09815 · pith_short_12: AL7JK7XDLXPB · pith_short_16: AL7JK7XDLXPB6XQV · pith_short_8: AL7JK7XD

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/AL7JK7XDLXPB6XQVGMLHSOLK7I \
  | 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: 02fe957ee35dde1f5e15331679396afa203c7b36ba728af340d663b53e2a5418

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87086881a3fb6c671b4507d117a9cad9e2844966e5ff9322e4fbdd17c2ad656a",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CE",
    "submitted_at": "2019-05-15T08:29:00Z",
    "title_canon_sha256": "4af72af93ff41ff0df4ecbd53f6508284aaecd2e39bda4dcca8b3c612e684776"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.09815",
    "kind": "arxiv",
    "version": 1
  }
}