Pith Number

pith:CJ5IGOHM

pith:2019:CJ5IGOHMKM4JUIL2755JXBSUFV

not attested not anchored not stored refs pending

Complex scaled infinite elements for exterior Helmholtz problems

Lothar Nannen, Markus Wess

arxiv:1907.09746 v1 · 2019-07-23 · 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{CJ5IGOHMKM4JUIL2755JXBSUFV}

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	2026-05-17T23:39:50.193150Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

127a8338ec53389a217aff7a9b86542d4cf035b117f59e096c53d8f384231d75

Aliases

arxiv: 1907.09746 · arxiv_version: 1907.09746v1 · doi: 10.48550/arxiv.1907.09746 · pith_short_12: CJ5IGOHMKM4J · pith_short_16: CJ5IGOHMKM4JUIL2 · pith_short_8: CJ5IGOHM

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/CJ5IGOHMKM4JUIL2755JXBSUFV \
  | 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: 127a8338ec53389a217aff7a9b86542d4cf035b117f59e096c53d8f384231d75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "823d4fbe5d05ba91f5ee428aa64ceefd794379186c4cea6c0db5a24e46cec442",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-07-23T08:19:24Z",
    "title_canon_sha256": "8412a4bcdf3caaa2a12e8e74e7b322088143edb50873b43932aa7ecbdcc0fa9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09746",
    "kind": "arxiv",
    "version": 1
  }
}