Pith Number

pith:UGRSA2GF

pith:2018:UGRSA2GFTTWHQNDPXDZ7ML24CQ

not attested not anchored not stored refs pending

Scaling Structured Multigrid to 500K+ Cores through Coarse-Grid Redistribution

Andrew Reisner, J. David Moulton, Luke N. Olson

arxiv:1803.02481 v1 · 2018-03-06 · cs.MS · cs.NA · cs.PF · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UGRSA2GFTTWHQNDPXDZ7ML24CQ}

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	2026-05-18T00:21:50.164140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1a32068c59cec78346fb8f3f62f5c1437e10386be6c34525fc6d54cb779d25a

Aliases

arxiv: 1803.02481 · arxiv_version: 1803.02481v1 · doi: 10.48550/arxiv.1803.02481 · pith_short_12: UGRSA2GFTTWH · pith_short_16: UGRSA2GFTTWHQNDP · pith_short_8: UGRSA2GF

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/UGRSA2GFTTWHQNDPXDZ7ML24CQ \
  | 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: a1a32068c59cec78346fb8f3f62f5c1437e10386be6c34525fc6d54cb779d25a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5183169123299a5bdfa09d2e0f7f01e46cf4ed7bbedca9224416c919960fdcb7",
    "cross_cats_sorted": [
      "cs.NA",
      "cs.PF",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2018-03-06T23:57:38Z",
    "title_canon_sha256": "24b7addad269a5030e211478be997cf295a0720ba0720fac11aac86c17ebf9a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.02481",
    "kind": "arxiv",
    "version": 1
  }
}