Pith Number

pith:SGWF3BB6

pith:2017:SGWF3BB6PBNSYU2ZRMIMSPKUHG

not attested not anchored not stored refs pending

Theory and implementation of $\mathcal{H}$-matrix based iterative and direct solvers for Helmholtz and elastodynamic oscillatory kernels

Luca Desiderio (POEMS), Patrick Ciarlet (POEMS), St\'ephanie Chaillat (POEMS)

arxiv:1706.09384 v2 · 2017-06-22 · math.NA · physics.class-ph

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SGWF3BB6PBNSYU2ZRMIMSPKUHG}

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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	2026-05-18T00:32:09.055562Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91ac5d843e785b2c53598b10c93d5439a0351800219261f53809c34d5405982c

Aliases

arxiv: 1706.09384 · arxiv_version: 1706.09384v2 · doi: 10.48550/arxiv.1706.09384 · pith_short_12: SGWF3BB6PBNS · pith_short_16: SGWF3BB6PBNSYU2Z · pith_short_8: SGWF3BB6

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/SGWF3BB6PBNSYU2ZRMIMSPKUHG \
  | 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: 91ac5d843e785b2c53598b10c93d5439a0351800219261f53809c34d5405982c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6edda55a3e0988b36c818f13d809446df26d1f807bd021dcca25fa36219180ef",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-06-22T06:31:38Z",
    "title_canon_sha256": "ae4ddfc1db5a301931384bad452cadf30dde8f1e0b08be4fcee2f0f2c313c271"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.09384",
    "kind": "arxiv",
    "version": 2
  }
}