Pith Number

pith:3LQJMN3U

pith:2017:3LQJMN3UXZLLCENX2E6WRZETHN

not attested not anchored not stored refs pending

From MPI to MPI+OpenACC: Conversion of a legacy FORTRAN PCG solver for the spherical Laplace equation

Jon A. Linker, Ronald M. Caplan, Zoran Mikic

arxiv:1709.01126 v2 · 2017-09-04 · cs.MS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3LQJMN3UXZLLCENX2E6WRZETHN}

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	2026-05-18T00:27:00.237876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dae0963774be56b111b7d13d68e4933b7c1a3781fa2e82362e1c055e90eb6160

Aliases

arxiv: 1709.01126 · arxiv_version: 1709.01126v2 · doi: 10.48550/arxiv.1709.01126 · pith_short_12: 3LQJMN3UXZLL · pith_short_16: 3LQJMN3UXZLLCENX · pith_short_8: 3LQJMN3U

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/3LQJMN3UXZLLCENX2E6WRZETHN \
  | 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: dae0963774be56b111b7d13d68e4933b7c1a3781fa2e82362e1c055e90eb6160

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8d6c84e271fb87e81322ab93421a1cf4ebe2382edc966628ca4eee812089001",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2017-09-04T19:26:03Z",
    "title_canon_sha256": "c5ef5f3da8bad8b677c96f82efde4de6d73cc65cee514153c3e1a4b67a9da5a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.01126",
    "kind": "arxiv",
    "version": 2
  }
}