Pith Number

pith:6TYOKTY3

pith:2012:6TYOKTY3HJHSOM7HAPTA6ABTPI

not attested not anchored not stored refs pending

The logical clarinet: numerical optimization of the geometry of woodwind instruments

Alexis Guilloteau (LMA), Christophe Vergez (LMA), Daniel Noreland, Franck Lalo\"e (LKB - Lhomond), Jean Kergomard (LMA), Philippe Guillemain (LMA)

arxiv:1209.3637 v2 · 2012-09-17 · physics.pop-ph · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6TYOKTY3HJHSOM7HAPTA6ABTPI}

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	2026-05-18T02:59:06.520731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f4f0e54f1b3a4f2733e703e60f00337a0bf2e5e8409f5534181d002e61990437

Aliases

arxiv: 1209.3637 · arxiv_version: 1209.3637v2 · doi: 10.48550/arxiv.1209.3637 · pith_short_12: 6TYOKTY3HJHS · pith_short_16: 6TYOKTY3HJHSOM7H · pith_short_8: 6TYOKTY3

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/6TYOKTY3HJHSOM7HAPTA6ABTPI \
  | 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: f4f0e54f1b3a4f2733e703e60f00337a0bf2e5e8409f5534181d002e61990437

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "231a562faeda5c463420a3c4135677f72424d17b958f1d21eca2e3179c7dbb56",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2012-09-17T12:33:38Z",
    "title_canon_sha256": "53d8cd5ed7f1be3d47bb069112690cd35d973aeff9e1a7a727a2e1be5d647f17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.3637",
    "kind": "arxiv",
    "version": 2
  }
}