Pith Number

pith:POMJWFUI

pith:2018:POMJWFUICH7BWBMVFHGRF6JUQP

not attested not anchored not stored refs pending

Calder\'on preconditioning of PMCHWT boundary integral equations for scattering by multiple absorbing dielectric particles

Anthony J. Baran, Antigoni Kleanthous, David P. Hewett, Matthew W. Scroggs, Timo Betcke

arxiv:1808.10539 v2 · 2018-08-30 · 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{POMJWFUICH7BWBMVFHGRF6JUQP}

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	2026-06-04T20:13:17.154558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b989b168811fe1b059529cd12f93483e158ca3cc767013535f0a7c6e2758b2a

Aliases

arxiv: 1808.10539 · arxiv_version: 1808.10539v2 · doi: 10.48550/arxiv.1808.10539 · pith_short_12: POMJWFUICH7B · pith_short_16: POMJWFUICH7BWBMV · pith_short_8: POMJWFUI

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/POMJWFUICH7BWBMVFHGRF6JUQP \
  | 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: 7b989b168811fe1b059529cd12f93483e158ca3cc767013535f0a7c6e2758b2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d30e3955f91d0b9531ebbdc760511f4272fe8dd5888e482df3d5885e6a05539a",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-08-30T22:35:00Z",
    "title_canon_sha256": "f055f28aeed777635ad830877dd37ec273400ca1d7f0dbe825a66ff118e11fcb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.10539",
    "kind": "arxiv",
    "version": 2
  }
}