Pith Number

pith:XBZ4ISJE

pith:2021:XBZ4ISJEQFMRJP7ZENAJLPQ6PG

not attested not anchored not stored refs pending

Fully algebraic domain decomposition preconditioners with adaptive spectral bounds

Lo\"ic Gouarin (CMAP), Nicole Spillane (CMAP)

arxiv:2106.10913 v1 · 2021-06-21 · 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{XBZ4ISJEQFMRJP7ZENAJLPQ6PG}

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	2026-07-05T02:50:54.556292Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b873c44924815914bff9234095be1e79b12f200b03a03debdb6be9fd466b0f8f

Aliases

arxiv: 2106.10913 · arxiv_version: 2106.10913v1 · doi: 10.48550/arxiv.2106.10913 · pith_short_12: XBZ4ISJEQFMR · pith_short_16: XBZ4ISJEQFMRJP7Z · pith_short_8: XBZ4ISJE

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/XBZ4ISJEQFMRJP7ZENAJLPQ6PG \
  | 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: b873c44924815914bff9234095be1e79b12f200b03a03debdb6be9fd466b0f8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e2126d0de618870a4ae47c02a117d99bb5aa8045bc54e3da44f812d5b5e68e7",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-06-21T08:25:58Z",
    "title_canon_sha256": "e3222f52ba58854ddd0a32eef83c64aec4bbbcb622577de6cfef74371181d08f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.10913",
    "kind": "arxiv",
    "version": 1
  }
}