Pith Number

pith:JGIEYW3C

pith:2021:JGIEYW3CCPEWRTTJXBPBVCVASX

not attested not anchored not stored refs pending

Stable and efficient FEM-BEM coupling with OSRC regularisation for acoustic wave transmission

Elwin van 't Wout

arxiv:2107.09733 v2 · 2021-07-20 · math.NA · cs.NA · physics.comp-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JGIEYW3CCPEWRTTJXBPBVCVASX}

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	2026-07-05T03:35:11.617546Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

49904c5b6213c968ce69b85e1a8aa095f0afe3a70d7974b727b051e77a36c5e1

Aliases

arxiv: 2107.09733 · arxiv_version: 2107.09733v2 · doi: 10.48550/arxiv.2107.09733 · pith_short_12: JGIEYW3CCPEW · pith_short_16: JGIEYW3CCPEWRTTJ · pith_short_8: JGIEYW3C

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/JGIEYW3CCPEWRTTJXBPBVCVASX \
  | 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: 49904c5b6213c968ce69b85e1a8aa095f0afe3a70d7974b727b051e77a36c5e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "081d62f25158ca6e29c10d6cf147aa8fb560c8a2234acd1c832fba1998a6fd55",
    "cross_cats_sorted": [
      "cs.NA",
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-07-20T19:07:16Z",
    "title_canon_sha256": "9cf8a86b12948be1202f37086969af7f943d8e8cb58bee6de06138cfc2fc32dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.09733",
    "kind": "arxiv",
    "version": 2
  }
}