Pith Number

pith:2PWETYRE

pith:2023:2PWETYRE25NDALWP3EM46PL5T5

not attested not anchored not stored refs pending

An extension of the approximate component mode synthesis method to the heterogeneous Helmholtz equation

Alexander Heinlein, Elena Giammatteo, Matthias Schlottbom

arxiv:2303.06671 v2 · 2023-03-12 · 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{2PWETYRE25NDALWP3EM46PL5T5}

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	2026-07-05T06:54:15.196045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3ec49e224d75a302ecfd919cf3d7d9f737295adac0fa8b24a30e2f5ca53910f

Aliases

arxiv: 2303.06671 · arxiv_version: 2303.06671v2 · doi: 10.48550/arxiv.2303.06671 · pith_short_12: 2PWETYRE25ND · pith_short_16: 2PWETYRE25NDALWP · pith_short_8: 2PWETYRE

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/2PWETYRE25NDALWP3EM46PL5T5 \
  | 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: d3ec49e224d75a302ecfd919cf3d7d9f737295adac0fa8b24a30e2f5ca53910f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40a8c0534925b629300037af9ed7e25bcf76dec808704daed1dddead58c63cd5",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2023-03-12T14:25:49Z",
    "title_canon_sha256": "9fe67460c37662ddaf1f7b2b5552e86392bcdf5641f464b5bf52a7916c75e916"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2303.06671",
    "kind": "arxiv",
    "version": 2
  }
}