Pith Number

pith:WIRLLS4M

pith:2022:WIRLLS4M3GS47KMWAAQFRKEAKU

not attested not anchored not stored refs pending

Adaptive observer for a nonlinear system with partially unknown state matrix and delayed measurements

Alexey Bobtsov, Nikolay Nikolaev, Olga Kozachek

arxiv:2211.08827 v1 · 2022-11-16 · math.OC · cs.SY · eess.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WIRLLS4M3GS47KMWAAQFRKEAKU}

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	2026-07-05T05:16:44.256518Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b222b5cb8cd9a5cfa996002058a880553bbfce0722ca3b85d9d99da666be4cf6

Aliases

arxiv: 2211.08827 · arxiv_version: 2211.08827v1 · doi: 10.48550/arxiv.2211.08827 · pith_short_12: WIRLLS4M3GS4 · pith_short_16: WIRLLS4M3GS47KMW · pith_short_8: WIRLLS4M

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/WIRLLS4M3GS47KMWAAQFRKEAKU \
  | 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: b222b5cb8cd9a5cfa996002058a880553bbfce0722ca3b85d9d99da666be4cf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4284b8e3a9612874fbd3bdb894db359e0cf8ce4b9ba0a3b69aed7a79f577db0f",
    "cross_cats_sorted": [
      "cs.SY",
      "eess.SY"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2022-11-16T11:03:39Z",
    "title_canon_sha256": "429e0afbc1a86b028722221a20ea85e3571ceec354c367ebc468d6b1808f6a8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2211.08827",
    "kind": "arxiv",
    "version": 1
  }
}