Pith Number

pith:Q4QSIQ34

pith:2019:Q4QSIQ34WSZXXVLM3GNBOUEEOM

not attested not anchored not stored refs pending

Turbulent boundary layers around wing sections up to Rec = 1,000,000

A. Hanifi, D. S. Henningson, M. Atzori, P. Schlatter, P. S. Negi, R. Vinuesa

arxiv:1904.07521 v1 · 2019-04-16 · 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{Q4QSIQ34WSZXXVLM3GNBOUEEOM}

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	2026-05-17T23:48:24.992484Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

872124437cb4b37bd56cd99a175084733b75a27cd7a286452dca4db768d13b7f

Aliases

arxiv: 1904.07521 · arxiv_version: 1904.07521v1 · doi: 10.48550/arxiv.1904.07521 · pith_short_12: Q4QSIQ34WSZX · pith_short_16: Q4QSIQ34WSZXXVLM · pith_short_8: Q4QSIQ34

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/Q4QSIQ34WSZXXVLM3GNBOUEEOM \
  | 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: 872124437cb4b37bd56cd99a175084733b75a27cd7a286452dca4db768d13b7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3af8b174277fb5bc1ad58b5bcd13a96c44b986af3c9f1e4fd9b718a07f05be8c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2019-04-16T08:02:50Z",
    "title_canon_sha256": "795669c161abad467ef948e193aa867b7262c0352e547cd376520152fcf26cee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.07521",
    "kind": "arxiv",
    "version": 1
  }
}