Pith Number

pith:EWB4TVP3

pith:2023:EWB4TVP3M4PR2B6AYTD5V4L2AO

not attested not anchored not stored refs pending

MGCNN: a learnable multigrid solver for sparse linear systems from PDEs on structured grids

Chensong Zhang, Minrui Lv, Yan Xie

arxiv:2312.11093 v2 · 2023-12-18 · 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{EWB4TVP3M4PR2B6AYTD5V4L2AO}

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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

2 papers in Pith

McMg: A Learned Phase-Space Multi-channel Multigrid Preconditioner for Helmholtz Equation

Receipt and verification

First computed	2026-07-05T08:17:12.245692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2583c9d5fb671f1d07c0c4c7daf17a038f8fb2fb8ffbe52063734c49be10ce69

Aliases

arxiv: 2312.11093 · arxiv_version: 2312.11093v2 · doi: 10.48550/arxiv.2312.11093 · pith_short_12: EWB4TVP3M4PR · pith_short_16: EWB4TVP3M4PR2B6A · pith_short_8: EWB4TVP3

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/EWB4TVP3M4PR2B6AYTD5V4L2AO \
  | 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: 2583c9d5fb671f1d07c0c4c7daf17a038f8fb2fb8ffbe52063734c49be10ce69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "439a2e399b04d30857be1320f81262542ccb2a965e93ddcf872a258e93f11d30",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2023-12-18T10:46:16Z",
    "title_canon_sha256": "65a31eaccce86e90d305986997201290c6fea3fc0894577f130019e04b2e4ad1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2312.11093",
    "kind": "arxiv",
    "version": 2
  }
}