Pith Number

pith:RH44IXKU

pith:2025:RH44IXKUUM4CTC2UDMIWWXQLV5

not attested not anchored not stored refs pending

FNPF-SEM: A parallel spectral element model in Firedrake for fully nonlinear water wave simulations

Allan Peter Engsig-Karup, Anders Melander, Jens Visbech

arxiv:2506.09435 v1 · 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{RH44IXKUUM4CTC2UDMIWWXQLV5}

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	2026-07-05T11:19:37.146098Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89f9c45d54a338298b541b116b5e0baf7059926a2e95cd5ea977025690d39ad9

Aliases

arxiv: 2506.09435 · arxiv_version: 2506.09435v1 · doi: 10.48550/arxiv.2506.09435 · pith_short_12: RH44IXKUUM4C · pith_short_16: RH44IXKUUM4CTC2U · pith_short_8: RH44IXKU

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/RH44IXKUUM4CTC2UDMIWWXQLV5 \
  | 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: 89f9c45d54a338298b541b116b5e0baf7059926a2e95cd5ea977025690d39ad9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a4250c9e3cbab92bc79ae0d32ebde8d84b16782168432fe6643fa2f6107537a",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-06-11T06:36:43Z",
    "title_canon_sha256": "3b7ffb1723ee0cb37ea81107ac3066931d9c583f1bd42983fcaaebef06835235"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.09435",
    "kind": "arxiv",
    "version": 1
  }
}