Pith Number

pith:H6OPQYRC

pith:2020:H6OPQYRCMLCY74KONGZRT67EKO

not attested not anchored not stored refs pending

Interval Observers for Simultaneous State and Model Estimation of Partially Known Nonlinear Systems

Mohammad Khajenejad, Sze Zheng Yong, Zeyuan Jin

arxiv:2004.03665 v1 · 2020-04-02 · eess.SY · cs.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{H6OPQYRCMLCY74KONGZRT67EKO}

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	2026-07-05T00:53:55.003632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f9cf8622262c58ff14e69b319fbe4539a6bef533342792b4b930d6098b6fa59

Aliases

arxiv: 2004.03665 · arxiv_version: 2004.03665v1 · doi: 10.48550/arxiv.2004.03665 · pith_short_12: H6OPQYRCMLCY · pith_short_16: H6OPQYRCMLCY74KO · pith_short_8: H6OPQYRC

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/H6OPQYRCMLCY74KONGZRT67EKO \
  | 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: 3f9cf8622262c58ff14e69b319fbe4539a6bef533342792b4b930d6098b6fa59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2c6e332f9642048729b0f28a820c6a870ede15e3184ee7141e9885287e3bc62",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2020-04-02T23:39:45Z",
    "title_canon_sha256": "2131d8ebd7399216fdaf81217d9f77ceabc0455c52b5deaa4eed673fdd28bce9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.03665",
    "kind": "arxiv",
    "version": 1
  }
}