Pith Number

pith:HJPMVR4R

pith:2014:HJPMVR4RSY6EQNRSEJ5UDCGLOT

not attested not anchored not stored refs pending

Optimal Two Player LQR State Feedback With Varying Delay

Andrew Lamperski, John C. Doyle, Nikolai Matni

arxiv:1403.7790 v1 · 2014-03-30 · math.OC · 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{HJPMVR4RSY6EQNRSEJ5UDCGLOT}

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	2026-05-18T02:55:12.387789Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a5ecac791963c483632227b4188cb74ee446897aa1a23c0d8c4f6b68b4d9772

Aliases

arxiv: 1403.7790 · arxiv_version: 1403.7790v1 · doi: 10.48550/arxiv.1403.7790 · pith_short_12: HJPMVR4RSY6E · pith_short_16: HJPMVR4RSY6EQNRS · pith_short_8: HJPMVR4R

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/HJPMVR4RSY6EQNRSEJ5UDCGLOT \
  | 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: 3a5ecac791963c483632227b4188cb74ee446897aa1a23c0d8c4f6b68b4d9772

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2c88af53ff3384898e4e6f01df7f4ebf823dad451e04c8e28cfdd4ca52117cb",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-03-30T17:38:23Z",
    "title_canon_sha256": "72570ffe2d97682df3b7e123fb86f31c57f5da4c4c900470529060b6e0971f0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.7790",
    "kind": "arxiv",
    "version": 1
  }
}