Pith Number

pith:FIYCRHSK

pith:2019:FIYCRHSKZT5SSOCJH3FPVTKNQS

not attested not anchored not stored refs pending

On spurious solutions encountered in Helmholtz scattering resonance computations in R^d with applications to nano-photonics and acoustics

Christian Engstr\"om, Juan Carlos Araujo Cabarcas

arxiv:1904.08812 v3 · 2019-04-18 · math-ph · cs.NA · math.MP · math.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{FIYCRHSKZT5SSOCJH3FPVTKNQS}

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	2026-06-04T20:14:26.071490Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a30289e4accfb2938493ecafacd4d84a218d0d00edaae5d932ccc337a98335f

Aliases

arxiv: 1904.08812 · arxiv_version: 1904.08812v3 · doi: 10.48550/arxiv.1904.08812 · pith_short_12: FIYCRHSKZT5S · pith_short_16: FIYCRHSKZT5SSOCJ · pith_short_8: FIYCRHSK

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/FIYCRHSKZT5SSOCJH3FPVTKNQS \
  | 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: 2a30289e4accfb2938493ecafacd4d84a218d0d00edaae5d932ccc337a98335f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "061839cae848461819a6606e0224324b634ae206c08d4ad8a9ff314500988c11",
    "cross_cats_sorted": [
      "cs.NA",
      "math.MP",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2019-04-18T14:37:36Z",
    "title_canon_sha256": "8550df7d2f922da49c96fcb0bf1d899ce0d1d0b58c2d45e3af19ecd818e1e45a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08812",
    "kind": "arxiv",
    "version": 3
  }
}