Pith Number

pith:BLLQVWZL

pith:2019:BLLQVWZLXCJOBXLKKJFPHDSG7V

not attested not anchored not stored refs pending

On Closed-form H-infinity Optimal Control and Large-scale Systems

Anders Rantzer, Carolina Bergeling, Richard Pates

arxiv:1903.06444 v1 · 2019-03-15 · 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{BLLQVWZLXCJOBXLKKJFPHDSG7V}

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	2026-05-17T23:51:10.850291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ad70adb2bb892e0dd6a524af38e46fd7468d75a66148ff7c9e229e96db4b975

Aliases

arxiv: 1903.06444 · arxiv_version: 1903.06444v1 · doi: 10.48550/arxiv.1903.06444 · pith_short_12: BLLQVWZLXCJO · pith_short_16: BLLQVWZLXCJOBXLK · pith_short_8: BLLQVWZL

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/BLLQVWZLXCJOBXLKKJFPHDSG7V \
  | 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: 0ad70adb2bb892e0dd6a524af38e46fd7468d75a66148ff7c9e229e96db4b975

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "657cee5047a6b013531b205de8d12b5fcb35186bddba9505784d3fe5ffa67971",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-03-15T10:33:39Z",
    "title_canon_sha256": "7c8a1403b0f02087df0e7ef28de20bf4ead42f28c355fa938a67b475f2890745"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.06444",
    "kind": "arxiv",
    "version": 1
  }
}