Pith Number

pith:ILUM5VDR

pith:2018:ILUM5VDRRYZP2AUJ3J7JFEBBYQ

not attested not anchored not stored refs pending

Continuous-Time Inverse Quadratic Optimal Control Problem

Xiaoming Hu, Yibei Li, Yu Yao

arxiv:1811.00129 v1 · 2018-10-31 · 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{ILUM5VDRRYZP2AUJ3J7JFEBBYQ}

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	2026-05-18T00:01:48.144231Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42e8ced4718e32fd0289da7e929021c4355fa56300cdce035ff1f6a924cc2ed2

Aliases

arxiv: 1811.00129 · arxiv_version: 1811.00129v1 · doi: 10.48550/arxiv.1811.00129 · pith_short_12: ILUM5VDRRYZP · pith_short_16: ILUM5VDRRYZP2AUJ · pith_short_8: ILUM5VDR

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/ILUM5VDRRYZP2AUJ3J7JFEBBYQ \
  | 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: 42e8ced4718e32fd0289da7e929021c4355fa56300cdce035ff1f6a924cc2ed2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fd058f1dc41f84a02137a4c2e3cd09ea01978efb6d015e4c50ede936e437c7d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-10-31T21:34:55Z",
    "title_canon_sha256": "79366ee90eb43922fd7d94a7825c9c9ce2dd5a25de66d87418ea58ebf92a0122"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.00129",
    "kind": "arxiv",
    "version": 1
  }
}