Pith Number

pith:EKAAWH7U

pith:2022:EKAAWH7UX5WQ7HNTXIGKITRP2M

not attested not anchored not stored refs pending

A universal matrix-free split preconditioner for the fixed-point iterative solution of non-symmetric linear systems

Ivo M. Vellekoop, Tom Vettenburg

arxiv:2207.14222 v2 · 2022-07-28 · math.NA · cs.NA · physics.comp-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EKAAWH7UX5WQ7HNTXIGKITRP2M}

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.

Cited by

1 paper in Pith

Iterative Born Solver for the Acoustic Helmholtz Equation with Heterogeneous Sound Speed and Density

Receipt and verification

First computed	2026-07-05T06:55:21.274854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22800b1ff4bf6d0f9db3ba0ca44e2fd33f1ea433516e80a8c1095fe931e51d4d

Aliases

arxiv: 2207.14222 · arxiv_version: 2207.14222v2 · doi: 10.48550/arxiv.2207.14222 · pith_short_12: EKAAWH7UX5WQ · pith_short_16: EKAAWH7UX5WQ7HNT · pith_short_8: EKAAWH7U

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/EKAAWH7UX5WQ7HNTXIGKITRP2M \
  | 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: 22800b1ff4bf6d0f9db3ba0ca44e2fd33f1ea433516e80a8c1095fe931e51d4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c85317b43f533145e0b43e660ec156cbc4bf3badf1986101ef14729b021aea8",
    "cross_cats_sorted": [
      "cs.NA",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-07-28T16:43:31Z",
    "title_canon_sha256": "2c6802b5d85bbfcf3015d328831ccb1fd289bfb4d6f77042445aa67ec76b83d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.14222",
    "kind": "arxiv",
    "version": 2
  }
}