Pith Number

pith:6I5FPYY6

pith:2014:6I5FPYY6WDO4QKLKQIDBQ5Y335

not attested not anchored not stored refs pending

A nonlinear observer to estimate unknown parameters during the synchronization of chaotic systems

L. Torres

arxiv:1406.5452 v2 · 2014-06-20 · 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{6I5FPYY6WDO4QKLKQIDBQ5Y335}

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	2026-05-18T00:42:08.059082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f23a57e31eb0ddc8296a820618771bdf4d15abc5072202639bcc90d692b8e2ec

Aliases

arxiv: 1406.5452 · arxiv_version: 1406.5452v2 · doi: 10.48550/arxiv.1406.5452 · pith_short_12: 6I5FPYY6WDO4 · pith_short_16: 6I5FPYY6WDO4QKLK · pith_short_8: 6I5FPYY6

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/6I5FPYY6WDO4QKLKQIDBQ5Y335 \
  | 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: f23a57e31eb0ddc8296a820618771bdf4d15abc5072202639bcc90d692b8e2ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35af607821ea35c83e18c63fa7c1b9d20bafa27f67dcc25c19d231118ef8f933",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2014-06-20T16:22:46Z",
    "title_canon_sha256": "332864a22a37e0bf6fb68adac362dee14b47c53697a8e7307b340090729772c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.5452",
    "kind": "arxiv",
    "version": 2
  }
}