Pith Number

pith:S4RGMPMR

pith:2015:S4RGMPMRRGPN5NRS3T6BLN7EBS

not attested not anchored not stored refs pending

Methods for verified stabilizing solutions to continuous-time algebraic Riccati equations

Federico Poloni, Tayyebe Haqiri

arxiv:1509.02015 v2 · 2015-09-07 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S4RGMPMRRGPN5NRS3T6BLN7EBS}

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	2026-06-04T17:09:35.569123Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9722663d91899edeb632dcfc15b7e40c80f39838ea6f7860950ed3d3089ec3bb

Aliases

arxiv: 1509.02015 · arxiv_version: 1509.02015v2 · doi: 10.48550/arxiv.1509.02015 · pith_short_12: S4RGMPMRRGPN · pith_short_16: S4RGMPMRRGPN5NRS · pith_short_8: S4RGMPMR

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/S4RGMPMRRGPN5NRS3T6BLN7EBS \
  | 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: 9722663d91899edeb632dcfc15b7e40c80f39838ea6f7860950ed3d3089ec3bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57ffc09011ebac3fd24bb72940770314ccb288fe0a7699907d9561df69948ec0",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-09-07T12:46:35Z",
    "title_canon_sha256": "594c98ccc2f1ed48b576676ef2a59d4b63493df85c8b92ffafe5a88e8052f48e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.02015",
    "kind": "arxiv",
    "version": 2
  }
}