Pith Number

pith:24OHLGYK

pith:2013:24OHLGYKYG2BCFLQFIGW5RWVTM

not attested not anchored not stored refs pending

The ADI iteration for Lyapunov equations implicitly performs H2 pseudo-optimal model order reduction

Heiko K. F. Panzer, Thomas Wolf

arxiv:1309.3985 v2 · 2013-09-16 · math.NA · cs.SY · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{24OHLGYKYG2BCFLQFIGW5RWVTM}

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	2026-05-18T02:59:18.269365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d71c759b0ac1b41115702a0d6ec6d59b34124aaf1c19b3cbde1cd68137ad34d6

Aliases

arxiv: 1309.3985 · arxiv_version: 1309.3985v2 · doi: 10.48550/arxiv.1309.3985 · pith_short_12: 24OHLGYKYG2B · pith_short_16: 24OHLGYKYG2BCFLQ · pith_short_8: 24OHLGYK

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/24OHLGYKYG2BCFLQFIGW5RWVTM \
  | 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: d71c759b0ac1b41115702a0d6ec6d59b34124aaf1c19b3cbde1cd68137ad34d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e74ea40e7f186b4e73a866c15640485d521e7561faecd56412dc4cb7a845f44f",
    "cross_cats_sorted": [
      "cs.SY",
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-09-16T14:53:51Z",
    "title_canon_sha256": "317c5942c1f2bd92fd154ad88c8afe85c1de6ddceb174caa408b47628367a2fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.3985",
    "kind": "arxiv",
    "version": 2
  }
}