Pith Number

pith:56QT7AJ7

pith:2018:56QT7AJ73MBNJ37WRYNPGCCRP2

not attested not anchored not stored refs pending

CFD simulation of the wind field over a terrain with sand fences: Critical spacing for the protected soil area

Asc\^anio D. Ara\'ujo, Eric J. R. Parteli, Hans J. Herrmann, Izael A. Lima, Jos\'e S. Andrade Jr., Yaping Shao

arxiv:1808.08945 v2 · 2018-08-27 · 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{56QT7AJ73MBNJ37WRYNPGCCRP2}

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	2026-05-17T23:49:43.124355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efa13f813fdb02d4eff68e1af308517e9bca75b847d1a0408419dc8b69ed99c7

Aliases

arxiv: 1808.08945 · arxiv_version: 1808.08945v2 · doi: 10.48550/arxiv.1808.08945 · pith_short_12: 56QT7AJ73MBN · pith_short_16: 56QT7AJ73MBNJ37W · pith_short_8: 56QT7AJ7

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/56QT7AJ73MBNJ37WRYNPGCCRP2 \
  | 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: efa13f813fdb02d4eff68e1af308517e9bca75b847d1a0408419dc8b69ed99c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7840b43562fc6d1ab89640ecb300f51b97510d478ccd59bd150cacc1cd857081",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2018-08-27T17:50:50Z",
    "title_canon_sha256": "06e8973b327ae3571e1fde8423e36a7a5b1f356b6cc978d4aebde66e43cdbccb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.08945",
    "kind": "arxiv",
    "version": 2
  }
}