Pith Number

pith:44QNIIHL

pith:2021:44QNIIHLMW2SYWGX2YA42NKX2B

not attested not anchored not stored refs pending

A FFT-accelerated multi-block finite-difference solver for massively parallel simulations of incompressible flows

Pedro Costa

arxiv:2106.03583 v8 · 2021-06-07 · physics.comp-ph · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{44QNIIHLMW2SYWGX2YA42NKX2B}

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	2026-07-05T04:56:32.955695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e720d420eb65b52c58d7d601cd3557d06f4fc598552aa4a8c8af84cc1341d75f

Aliases

arxiv: 2106.03583 · arxiv_version: 2106.03583v8 · doi: 10.48550/arxiv.2106.03583 · pith_short_12: 44QNIIHLMW2S · pith_short_16: 44QNIIHLMW2SYWGX · pith_short_8: 44QNIIHL

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/44QNIIHLMW2SYWGX2YA42NKX2B \
  | 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: e720d420eb65b52c58d7d601cd3557d06f4fc598552aa4a8c8af84cc1341d75f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a3f5c269647fbce3c55fab583403e44c6310cd4c5792a0ed5542da765a1c6d2",
    "cross_cats_sorted": [
      "physics.flu-dyn"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2021-06-07T13:07:54Z",
    "title_canon_sha256": "4ca272e66fb810254e5c1dab14c6c38a10c1d22bdb847b03567c48c87f459464"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.03583",
    "kind": "arxiv",
    "version": 8
  }
}