Pith Number

pith:KWHEQR7X

pith:2013:KWHEQR7XJTJSHG4LCNBJRNKPLE

not attested not anchored not stored refs pending

Achieving Efficient Strong Scaling with PETSc using Hybrid MPI/OpenMP Optimisation

Gerard Gorman, James Southern, Lawrence Mitchell, Michael Lange, Michele Weiland

arxiv:1303.5275 v1 · 2013-03-21 · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KWHEQR7XJTJSHG4LCNBJRNKPLE}

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	2026-05-18T02:29:32.456393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

558e4847f74cd3239b8b134298b54f5925b2ab789ac1b054bb081bf8bb2196fb

Aliases

arxiv: 1303.5275 · arxiv_version: 1303.5275v1 · doi: 10.48550/arxiv.1303.5275 · pith_short_12: KWHEQR7XJTJS · pith_short_16: KWHEQR7XJTJSHG4L · pith_short_8: KWHEQR7X

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/KWHEQR7XJTJSHG4LCNBJRNKPLE \
  | 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: 558e4847f74cd3239b8b134298b54f5925b2ab789ac1b054bb081bf8bb2196fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f39257303e83727e1bf9246d24eb64bc1188d21154a6f942f921d8911571a4bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2013-03-21T14:56:02Z",
    "title_canon_sha256": "0625c098399f843c66f1c140c34fad687d4df736bd681a945c95e83486ae720f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.5275",
    "kind": "arxiv",
    "version": 1
  }
}