Pith Number

pith:XMX3V5HZ

pith:2024:XMX3V5HZR6F4O57QUEMLUT3ORA

not attested not anchored not stored refs pending

A Robust Two-Level Schwarz Preconditioner For Sparse Matrices

Fr\'ed\'eric Nataf, Hussam Al Daas, Pierre-Henri Tournier, Pierre Jolivet

arxiv:2401.03915 v1 · 2024-01-08 · 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{XMX3V5HZR6F4O57QUEMLUT3ORA}

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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.

Cited by

1 paper in Pith

Achieving wavenumber robustness in domain decomposition for heterogeneous Helmholtz equation: an overview of spectral coarse spaces

Receipt and verification

First computed	2026-07-05T07:31:15.296681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb2fbaf4f98f8bc777f0a118ba4f6e8807662c1462ccecaa0fc58d0f522f464f

Aliases

arxiv: 2401.03915 · arxiv_version: 2401.03915v1 · doi: 10.48550/arxiv.2401.03915 · pith_short_12: XMX3V5HZR6F4 · pith_short_16: XMX3V5HZR6F4O57Q · pith_short_8: XMX3V5HZ

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/XMX3V5HZR6F4O57QUEMLUT3ORA \
  | 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: bb2fbaf4f98f8bc777f0a118ba4f6e8807662c1462ccecaa0fc58d0f522f464f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9eb4cb3d49cd4b778f92746a1d74ad033e334c2727a8211e50d769199d9ad890",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2024-01-08T14:23:56Z",
    "title_canon_sha256": "be3e0febf23c3aa020a0c1b2940c05d36282f87741080571b5fa3f60f551c51d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2401.03915",
    "kind": "arxiv",
    "version": 1
  }
}