Pith Number

pith:QBULUGEI

pith:2023:QBULUGEIOMUMRCHEO63XVVLRVX

not attested not anchored not stored refs pending

Preserving the positivity of the deformation gradient determinant in intergrid interpolation by combining RBFs and SVD: application to cardiac electromechanics

Alfio Quarteroni, Francesco Regazzoni, Luca Dede', Michele Bucelli

arxiv:2306.00457 v1 · 2023-06-01 · 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{QBULUGEIOMUMRCHEO63XVVLRVX}

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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	2026-07-05T06:16:26.758612Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8068ba18887328c888e477b77ad571adf0db8e3c341c4680db778f4f1a6cf0a6

Aliases

arxiv: 2306.00457 · arxiv_version: 2306.00457v1 · doi: 10.48550/arxiv.2306.00457 · pith_short_12: QBULUGEIOMUM · pith_short_16: QBULUGEIOMUMRCHE · pith_short_8: QBULUGEI

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/QBULUGEIOMUMRCHEO63XVVLRVX \
  | 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: 8068ba18887328c888e477b77ad571adf0db8e3c341c4680db778f4f1a6cf0a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9ab52a4dbba779cb9b5f76e4c1c222fff57f4137c5f3107fbe54ba4cdd2b49c",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2023-06-01T08:58:48Z",
    "title_canon_sha256": "f19439d257d0de501a1a68f893c5745061b0c56765ce71099910c4c2888c9b19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2306.00457",
    "kind": "arxiv",
    "version": 1
  }
}