Pith Number

pith:WLWTDRNY

pith:2018:WLWTDRNYAEYGDD2VC657NGVQRS

not attested not anchored not stored refs pending

On the drag of freely falling non-spherical particles

Costanza Bonadonna, Gholamhossein Bagheri

arxiv:1810.08787 v1 · 2018-10-20 · 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{WLWTDRNYAEYGDD2VC657NGVQRS}

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	2026-05-18T00:02:41.880627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2ed31c5b80130618f5517bbf69ab08c8545061542fa325a28fa7335a3934c72

Aliases

arxiv: 1810.08787 · arxiv_version: 1810.08787v1 · doi: 10.48550/arxiv.1810.08787 · pith_short_12: WLWTDRNYAEYG · pith_short_16: WLWTDRNYAEYGDD2V · pith_short_8: WLWTDRNY

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/WLWTDRNYAEYGDD2VC657NGVQRS \
  | 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: b2ed31c5b80130618f5517bbf69ab08c8545061542fa325a28fa7335a3934c72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aaecc86c7394bdde0eb048ac78b2f562555e4c7f6834a7c00fcb70146517465c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2018-10-20T10:59:09Z",
    "title_canon_sha256": "0877385f1c9a4056576935e25b4b75f83e963a62196fbcad411950e90f34f73e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08787",
    "kind": "arxiv",
    "version": 1
  }
}