Pith Number

pith:YHSX2WEW

pith:2011:YHSX2WEWYM2AIOICTD4RJPCNTM

not attested not anchored not stored refs pending

Leonardo's rule, self-similarity and wind-induced stresses in trees

Christophe Eloy

arxiv:1105.2591 v2 · 2011-05-13 · physics.bio-ph · physics.flu-dyn

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YHSX2WEWYM2AIOICTD4RJPCNTM}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T04:06:17.607756Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1e57d5896c33404390298f914bc4d9b24556aef8ec2d2038b08bde81a1a39b2

Aliases

arxiv: 1105.2591 · arxiv_version: 1105.2591v2 · doi: 10.48550/arxiv.1105.2591 · pith_short_12: YHSX2WEWYM2A · pith_short_16: YHSX2WEWYM2AIOIC · pith_short_8: YHSX2WEW

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/YHSX2WEWYM2AIOICTD4RJPCNTM \
  | 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: c1e57d5896c33404390298f914bc4d9b24556aef8ec2d2038b08bde81a1a39b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2326814c22c4eb92b949b0de236ca3d5a429252a7580e006052f2aacbd8beec0",
    "cross_cats_sorted": [
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2011-05-13T00:06:14Z",
    "title_canon_sha256": "ae3a63f4b7b5ef65dde2c861def1d14c9834b974df2bfc6b9ffa6e337bf4d133"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.2591",
    "kind": "arxiv",
    "version": 2
  }
}