Pith Number

pith:W76C5UJD

pith:2021:W76C5UJDZVR3S6CXMJN7G6WDLX

not attested not anchored not stored refs pending

An explicit and non-iterative moving-least-squares immersed-boundary method with low boundary velocity error

Qingdong Cai, Shufan Zou, Wenyuan Chen, Yantao Yang

arxiv:2110.13612 v1 · 2021-10-19 · math.NA · cs.NA · 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{W76C5UJDZVR3S6CXMJN7G6WDLX}

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	2026-07-05T03:25:40.956371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7fc2ed123cd63b97857625bf37ac35de9eda9f72d054ebe77cfabed09987c5e

Aliases

arxiv: 2110.13612 · arxiv_version: 2110.13612v1 · doi: 10.48550/arxiv.2110.13612 · pith_short_12: W76C5UJDZVR3 · pith_short_16: W76C5UJDZVR3S6CX · pith_short_8: W76C5UJD

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/W76C5UJDZVR3S6CXMJN7G6WDLX \
  | 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: b7fc2ed123cd63b97857625bf37ac35de9eda9f72d054ebe77cfabed09987c5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ad87fc6655b8e7dcf207f453c07e76de7358535ca6d2fc95556fdced75028e6",
    "cross_cats_sorted": [
      "cs.NA",
      "physics.comp-ph",
      "physics.flu-dyn"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-10-19T02:21:52Z",
    "title_canon_sha256": "a385cd8dd872c92f1c2fab8ffe5ca7abdac8c2fd808a64db2d5263f6831378ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.13612",
    "kind": "arxiv",
    "version": 1
  }
}