Pith Number

pith:JZBWS5LI

pith:2020:JZBWS5LIXANDNEPSH7QIP3O5JM

not attested not anchored not stored refs pending

Boundary element methods for Helmholtz problems with weakly imposed boundary conditions

Erik Burman, Matthew W. Scroggs, Timo Betcke

arxiv:2004.13424 v3 · 2020-04-28 · 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{JZBWS5LIXANDNEPSH7QIP3O5JM}

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	2026-07-05T06:09:29.678758Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e43697568b81a3691f23fe087eddd4b3f8d02ddc7030efd2d54f2c6f104785d

Aliases

arxiv: 2004.13424 · arxiv_version: 2004.13424v3 · doi: 10.48550/arxiv.2004.13424 · pith_short_12: JZBWS5LIXAND · pith_short_16: JZBWS5LIXANDNEPS · pith_short_8: JZBWS5LI

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/JZBWS5LIXANDNEPSH7QIP3O5JM \
  | 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: 4e43697568b81a3691f23fe087eddd4b3f8d02ddc7030efd2d54f2c6f104785d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c77ca79c985f0fd27df329b841b1818e4122515dd21b0521309283f851e136da",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-04-28T11:12:32Z",
    "title_canon_sha256": "0311d93ed7cb4960de88fe0d1dd8daba71a6617914dbef98ebbcdfb9228c7d61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.13424",
    "kind": "arxiv",
    "version": 3
  }
}