Pith Number

pith:67IKDGH6

pith:2017:67IKDGH6CRANZZIOHKVCOAPKL2

not attested not anchored not stored refs pending

A Quantum Kalman Filter-Based PID Controller

John E. Gough

arxiv:1701.06578 v1 · 2017-01-23 · quant-ph · math-ph · math.MP · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{67IKDGH6CRANZZIOHKVCOAPKL2}

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	2026-05-18T00:52:12.616879Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7d0a198fe1440dce50e3aaa2701ea5e8e1e3a92919ad65155f3ea66af0261ce

Aliases

arxiv: 1701.06578 · arxiv_version: 1701.06578v1 · doi: 10.48550/arxiv.1701.06578 · pith_short_12: 67IKDGH6CRAN · pith_short_16: 67IKDGH6CRANZZIO · pith_short_8: 67IKDGH6

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/67IKDGH6CRANZZIOHKVCOAPKL2 \
  | 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: f7d0a198fe1440dce50e3aaa2701ea5e8e1e3a92919ad65155f3ea66af0261ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "057bce990b065db908b58d2dffb340534f45efb66e67966f38d93bc72334810e",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-01-23T19:00:06Z",
    "title_canon_sha256": "45afd39783dcaf388c2208b44639ac51b59e9138cbb1ca03c4a77f76a5374847"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.06578",
    "kind": "arxiv",
    "version": 1
  }
}