Pith Number

pith:FUR33VSP

pith:2009:FUR33VSP7YFUMWF62XKFQAXQWQ

not attested not anchored not stored refs pending

Nonperiodic echoes from quantum mushroom billiard hats

A. Richter, B. Dietz, F. Sch\"afer, M. Miski-Oglu, T. Friedrich, T. H. Seligmann

arxiv:0908.4193 v1 · 2009-08-28 · nlin.CD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FUR33VSP7YFUMWF62XKFQAXQWQ}

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	2026-05-18T02:12:13.426985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d23bdd64ffe0b4658bed5d45802f0b421ec4a34f12ff83e97fd9f93a918205e

Aliases

arxiv: 0908.4193 · arxiv_version: 0908.4193v1 · doi: 10.48550/arxiv.0908.4193 · pith_short_12: FUR33VSP7YFU · pith_short_16: FUR33VSP7YFUMWF6 · pith_short_8: FUR33VSP

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/FUR33VSP7YFUMWF62XKFQAXQWQ \
  | 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: 2d23bdd64ffe0b4658bed5d45802f0b421ec4a34f12ff83e97fd9f93a918205e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ba18a52992eabcd753cd94bb95a64d11940ec5ba622f8d4399c78af74cb7ace",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2009-08-28T11:23:57Z",
    "title_canon_sha256": "6356e5f843256a57b2413a7078024e39108572d768014b24329cab6e2c4a55f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4193",
    "kind": "arxiv",
    "version": 1
  }
}