Pith Number

pith:LJ4QFNOH

pith:2019:LJ4QFNOHYEF7PAWBQ42OI5K24L

not attested not anchored not stored refs pending

Finite-dimensional control of linear discrete-time fractional-order systems

Andrea Alessandretti, A. Pedro Aguiar, George J. Pappas, Sergio Pequito

arxiv:1906.06673 v1 · 2019-06-16 · 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{LJ4QFNOHYEF7PAWBQ42OI5K24L}

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	2026-05-17T23:43:12.982797Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a7902b5c7c10bf782c18734e4755ae2ef3fd5e0436b737b7b684d687750c3a8

Aliases

arxiv: 1906.06673 · arxiv_version: 1906.06673v1 · doi: 10.48550/arxiv.1906.06673 · pith_short_12: LJ4QFNOHYEF7 · pith_short_16: LJ4QFNOHYEF7PAWB · pith_short_8: LJ4QFNOH

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/LJ4QFNOHYEF7PAWBQ42OI5K24L \
  | 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: 5a7902b5c7c10bf782c18734e4755ae2ef3fd5e0436b737b7b684d687750c3a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88cd843cc6dbd94d7997e4d0b754a3765d04f6c572615753b8345402210d97f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-06-16T12:55:20Z",
    "title_canon_sha256": "b7f32283efc8bf3447804a01e80deb606223ed3612bf12acc4fc25ee556cdae5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.06673",
    "kind": "arxiv",
    "version": 1
  }
}