Pith Number

pith:SKL7ZLMH

pith:1999:SKL7ZLMHE4MV6RWID4M7WYSWMB

not attested not anchored not stored refs pending

A non extensive approach to the entropy of symbolic sequences

2, (2) Center for Nonlinear Science, 3), (3) Dipartimento di Fisica dell'Universita' di Pisa, Denton, Italy, Italy), Luigi Palatella (3) ((1) Istituto di Biofisica del Consiglio Nazionale delle Ricerche, Marco Buiatti (1), Paolo Grigolini (1, Pisa, Texas, University of North Texas

arxiv:chao-dyn/9902006 v2 · 1999-02-06 · 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{SKL7ZLMHE4MV6RWID4M7WYSWMB}

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	2026-05-18T01:40:11.442857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9297fcad8727195f46c81f19fb62566054b80f0e14844ec052b1e5f210617e39

Aliases

arxiv: chao-dyn/9902006 · arxiv_version: chao-dyn/9902006v2 · doi: 10.48550/arxiv.chao-dyn/9902006 · pith_short_12: SKL7ZLMHE4MV · pith_short_16: SKL7ZLMHE4MV6RWI · pith_short_8: SKL7ZLMH

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/SKL7ZLMHE4MV6RWID4M7WYSWMB \
  | 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: 9297fcad8727195f46c81f19fb62566054b80f0e14844ec052b1e5f210617e39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1172eee7e241706ec5730f933a3b93f64b180a634c221ef8c878e520dde8b157",
    "cross_cats_sorted": [
      "nlin.CD"
    ],
    "license": "",
    "primary_cat": "chao-dyn",
    "submitted_at": "1999-02-06T12:17:39Z",
    "title_canon_sha256": "e356bf710f93f87e933e4754f53422bb0d37ddd7be3b1fe43f6ac854d148442b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "chao-dyn/9902006",
    "kind": "arxiv",
    "version": 2
  }
}