Pith Number

pith:SCSPOTCQ

pith:2025:SCSPOTCQPJP3O5ZXV776LLSZTS

not attested not anchored not stored refs pending

Kernel-learning parameter prediction and evaluation in algebraic multigrid method for several PDEs

Fangfang Zhang, Juan Zhang, Junyue Luo, Xiaoqiang Yue

arxiv:2504.14930 v3 · 2025-04-21 · 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{SCSPOTCQPJP3O5ZXV776LLSZTS}

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	2026-06-23T03:13:45.023498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90a4f74c507a5fb77737afffe5ae599c9e524e27f318d58f79a2666dee346e4b

Aliases

arxiv: 2504.14930 · arxiv_version: 2504.14930v3 · doi: 10.48550/arxiv.2504.14930 · pith_short_12: SCSPOTCQPJP3 · pith_short_16: SCSPOTCQPJP3O5ZX · pith_short_8: SCSPOTCQ

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/SCSPOTCQPJP3O5ZXV776LLSZTS \
  | 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: 90a4f74c507a5fb77737afffe5ae599c9e524e27f318d58f79a2666dee346e4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5305973cb9117e93b420f2dc0a5138a297945dba4bd0048dce0373afd7c83eb8",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-04-21T07:50:51Z",
    "title_canon_sha256": "dac5e47e74efdbdc515df2ac477dd6fe86ea0c67d839c9d81b25b6dafa84db2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.14930",
    "kind": "arxiv",
    "version": 3
  }
}