Pith Number

pith:PA4FK7LU

pith:2019:PA4FK7LUFZLWZTB5W2J4HM7NP4

not attested not anchored not stored refs pending

Multiple vortex structures in the wake of a rectangular winglet in ground effect

Clara M. Velte, Martin O. L. Hansen, Valery L. Okulov

arxiv:1906.06402 v1 · 2019-06-14 · 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{PA4FK7LUFZLWZTB5W2J4HM7NP4}

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	2026-05-17T23:43:13.798629Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7838557d742e576ccc3db693c3b3ed7f2cc57cb45818b01bfc587e264ba0c6c0

Aliases

arxiv: 1906.06402 · arxiv_version: 1906.06402v1 · doi: 10.48550/arxiv.1906.06402 · pith_short_12: PA4FK7LUFZLW · pith_short_16: PA4FK7LUFZLWZTB5 · pith_short_8: PA4FK7LU

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/PA4FK7LUFZLWZTB5W2J4HM7NP4 \
  | 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: 7838557d742e576ccc3db693c3b3ed7f2cc57cb45818b01bfc587e264ba0c6c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b33844163cd059b3d305848c8d915f314289ac9a9ba6c6c585070fe6e6cfabb8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2019-06-14T21:02:11Z",
    "title_canon_sha256": "e1d1661b176c25953d450685737abf7f51984d04d4f88bc7745d25a8bb326511"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.06402",
    "kind": "arxiv",
    "version": 1
  }
}