Pith Number

pith:GFR22ZJZ

pith:2018:GFR22ZJZIQMVNC4SHFQY2UAZOH

not attested not anchored not stored refs pending

Negative Imaginary State Feedback Control with a Prescribed Degree of Stability

Ian Petersen, James Dannatt

arxiv:1807.07212 v1 · 2018-07-19 · 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{GFR22ZJZIQMVNC4SHFQY2UAZOH}

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	2026-05-18T00:10:20.890825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3163ad65394419568b9239618d501971c2ac07750efcc5f525b12aaedf1d8dfb

Aliases

arxiv: 1807.07212 · arxiv_version: 1807.07212v1 · doi: 10.48550/arxiv.1807.07212 · pith_short_12: GFR22ZJZIQMV · pith_short_16: GFR22ZJZIQMVNC4S · pith_short_8: GFR22ZJZ

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/GFR22ZJZIQMVNC4SHFQY2UAZOH \
  | 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: 3163ad65394419568b9239618d501971c2ac07750efcc5f525b12aaedf1d8dfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcc4c89c66cabbfe23bfc4b0af379ebba156553533f25e0524507a0e05014523",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-07-19T01:41:29Z",
    "title_canon_sha256": "b904627e8720f919ec30c1e5012eebb34fa63ad37f4725b1ffff76816593a2ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07212",
    "kind": "arxiv",
    "version": 1
  }
}