Pith Number

pith:TG5FG6Y4

pith:2018:TG5FG6Y46M5OXJONDO7R4WWK24

not attested not anchored not stored refs pending

Wing fold angle determines the terminal descent velocity of double winged autorotating seeds, fruits and other diaspores

Andreas Carlson, Jean Rabault, Richard A. Fauli

arxiv:1811.12221 v2 · 2018-11-29 · 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{TG5FG6Y46M5OXJONDO7R4WWK24}

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	2026-05-17T23:39:47.828097Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99ba537b1cf33aeba5cd1bbf1e5acad71ca45222aca267d24b12754842a3a418

Aliases

arxiv: 1811.12221 · arxiv_version: 1811.12221v2 · doi: 10.48550/arxiv.1811.12221 · pith_short_12: TG5FG6Y46M5O · pith_short_16: TG5FG6Y46M5OXJON · pith_short_8: TG5FG6Y4

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/TG5FG6Y46M5OXJONDO7R4WWK24 \
  | 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: 99ba537b1cf33aeba5cd1bbf1e5acad71ca45222aca267d24b12754842a3a418

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9f6cfcf60a2134460cb032f0857fae1d7c2be5f8557ae6713e1b59622d17645",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2018-11-29T14:55:48Z",
    "title_canon_sha256": "f75c8c0ea49a9c5fdc4cdd5ef89e3d6dae3e7bf8bdced5c4e19fc20a7d26d0e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.12221",
    "kind": "arxiv",
    "version": 2
  }
}