Pith Number

pith:KAYWA5AE

pith:2017:KAYWA5AE2QMQ2HQXHYPC2TTDTT

not attested not anchored not stored refs pending

Optimal controller/observer gains of discounted-cost LQG systems

Hildo Bijl, Thomas B. Sch\"on

arxiv:1706.01042 v4 · 2017-06-04 · 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{KAYWA5AE2QMQ2HQXHYPC2TTDTT}

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	2026-05-17T23:58:54.742411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5031607404d4190d1e173e1e2d4e639cc342aed562141865eeafa30851e5c4b9

Aliases

arxiv: 1706.01042 · arxiv_version: 1706.01042v4 · doi: 10.48550/arxiv.1706.01042 · pith_short_12: KAYWA5AE2QMQ · pith_short_16: KAYWA5AE2QMQ2HQX · pith_short_8: KAYWA5AE

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/KAYWA5AE2QMQ2HQXHYPC2TTDTT \
  | 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: 5031607404d4190d1e173e1e2d4e639cc342aed562141865eeafa30851e5c4b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00912b5368e56f3d55e0fde777c4d8d2dc995fdf73a3e75a9ee81f43b0b0cd34",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2017-06-04T08:26:38Z",
    "title_canon_sha256": "c9a2a8a81e410bc766c2fd24408e9ab861f4f0a3c29ee5af7b17f9f17a75f959"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.01042",
    "kind": "arxiv",
    "version": 4
  }
}