Pith Number

pith:P7NGN3DA

pith:2020:P7NGN3DAAGVDWN5F2IC44GPRNP

not attested not anchored not stored refs pending

Simultaneous Input and State Interval Observers for Nonlinear Systems with Rank-Deficient Direct Feedthrough

Mohammad Khajenejad, Sze Zheng Yong

arxiv:2004.01861 v2 · 2020-04-04 · 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{P7NGN3DAAGVDWN5F2IC44GPRNP}

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	2026-07-05T02:00:44.568860Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fda66ec6001aa3b37a5d205ce19f16bf4af9f0a3b899b40d40c65f5ff568c7f

Aliases

arxiv: 2004.01861 · arxiv_version: 2004.01861v2 · doi: 10.48550/arxiv.2004.01861 · pith_short_12: P7NGN3DAAGVD · pith_short_16: P7NGN3DAAGVDWN5F · pith_short_8: P7NGN3DA

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/P7NGN3DAAGVDWN5F2IC44GPRNP \
  | 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: 7fda66ec6001aa3b37a5d205ce19f16bf4af9f0a3b899b40d40c65f5ff568c7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de06d72a196427a1e8eec45fa48dd76392ef7d8b5f9fe8b428b56db182c0b6a1",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2020-04-04T05:31:35Z",
    "title_canon_sha256": "d799dbb366620f5106385a8b474d91d06f9a14c0ada83d1c1493f8fdf8bed8d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.01861",
    "kind": "arxiv",
    "version": 2
  }
}