Pith Number

pith:K65JLPDZ

pith:2019:K65JLPDZSDVPB5CXYEXISKE7HR

not attested not anchored not stored refs pending

Circulant preconditioning in the volume integral equation method for silicon photonics

Alexandra Tambova, Athanasios G. Polimeridis, Jacob K. White, Samuel P. Groth

arxiv:1903.07884 v1 · 2019-03-19 · 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{K65JLPDZSDVPB5CXYEXISKE7HR}

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	2026-05-17T23:42:20.567799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57ba95bc7990eaf0f457c12e89289f3c67f875904fe96cbeaf93bc8742a01dfc

Aliases

arxiv: 1903.07884 · arxiv_version: 1903.07884v1 · doi: 10.48550/arxiv.1903.07884 · pith_short_12: K65JLPDZSDVP · pith_short_16: K65JLPDZSDVPB5CX · pith_short_8: K65JLPDZ

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/K65JLPDZSDVPB5CXYEXISKE7HR \
  | 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: 57ba95bc7990eaf0f457c12e89289f3c67f875904fe96cbeaf93bc8742a01dfc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56a99145a971c480493a6b9c2b12124016e92802f1a3b005c19c6c5e6c8a3c8e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-03-19T08:56:42Z",
    "title_canon_sha256": "dc09687efb735078d0170fd44344c902531e33175e692c48f899a05544031f32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.07884",
    "kind": "arxiv",
    "version": 1
  }
}