Pith Number

pith:YHNEGYQP

pith:1998:YHNEGYQPGP6WNOSHUFMUF65VHC

not attested not anchored not stored refs pending

Bryuno Function and the Standard Map

Alberto Berretti, Guido Gentile

arxiv:chao-dyn/9810035 v1 · 1998-10-29 · chao-dyn · 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{YHNEGYQPGP6WNOSHUFMUF65VHC}

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	2026-07-04T14:17:29.969394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1da43620f33fd66ba47a15942fbb53880b6b2b091fce724f704c84109cbbbc3

Aliases

arxiv: chao-dyn/9810035 · arxiv_version: chao-dyn/9810035v1 · doi: 10.48550/arxiv.chao-dyn/9810035 · pith_short_12: YHNEGYQPGP6W · pith_short_16: YHNEGYQPGP6WNOSH · pith_short_8: YHNEGYQP

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/YHNEGYQPGP6WNOSHUFMUF65VHC \
  | 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: c1da43620f33fd66ba47a15942fbb53880b6b2b091fce724f704c84109cbbbc3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b5bb52bea544a76c2eb95a384d86bdfcadd0a5aff5d48b3e740417ddd1eb122",
    "cross_cats_sorted": [
      "nlin.CD"
    ],
    "license": "",
    "primary_cat": "chao-dyn",
    "submitted_at": "1998-10-29T09:14:47Z",
    "title_canon_sha256": "bd88ba8d53cff9e569089ef7cfc24e98cba25234b2f30220f02f62e50de03763"
  },
  "schema_version": "1.0",
  "source": {
    "id": "chao-dyn/9810035",
    "kind": "arxiv",
    "version": 1
  }
}