Pith Number

pith:4XIP44XG

pith:2009:4XIP44XG4K7PHXSR53SYLFSFKY

not attested not anchored not stored refs pending

Kolmogorov-Sinai entropy from recurrence times

E. J. Ngamga, J. Kurths, Margarida Brito, M. S. Baptista, Paulo R. F. Pinto

arxiv:0908.3401 v2 · 2009-08-24 · nlin.CD · nlin.AO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4XIP44XG4K7PHXSR53SYLFSFKY}

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	2026-05-18T02:12:23.626180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5d0fe72e6e2bef3de51eee5859645561190b11b7460c7cbde4e5785e5f0384c

Aliases

arxiv: 0908.3401 · arxiv_version: 0908.3401v2 · doi: 10.48550/arxiv.0908.3401 · pith_short_12: 4XIP44XG4K7P · pith_short_16: 4XIP44XG4K7PHXSR · pith_short_8: 4XIP44XG

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/4XIP44XG4K7PHXSR53SYLFSFKY \
  | 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: e5d0fe72e6e2bef3de51eee5859645561190b11b7460c7cbde4e5785e5f0384c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4441361aa342432864824a7c7aea734bf9f7936cce73677615d5718873845bd",
    "cross_cats_sorted": [
      "nlin.AO"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2009-08-24T10:12:22Z",
    "title_canon_sha256": "06f7c8ac6681efd0378fcbb72772a8c8e344306a82c560bde04deb1564207ddd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.3401",
    "kind": "arxiv",
    "version": 2
  }
}