Pith Number

pith:KPAICF7R

pith:2017:KPAICF7RHOJQMMCOS6JAPDCQRL

not attested not anchored not stored refs pending

Minimum energy for linear systems with finite horizon: a non-standard Riccati equation

Fausto Gozzi, Paolo Acquistapace

arxiv:1704.02025 v1 · 2017-04-06 · 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{KPAICF7RHOJQMMCOS6JAPDCQRL}

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	2026-05-18T00:46:51.008612Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53c08117f13b9306304e9792078c508aecdb327cd0888254f668651733ffd9de

Aliases

arxiv: 1704.02025 · arxiv_version: 1704.02025v1 · doi: 10.48550/arxiv.1704.02025 · pith_short_12: KPAICF7RHOJQ · pith_short_16: KPAICF7RHOJQMMCO · pith_short_8: KPAICF7R

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/KPAICF7RHOJQMMCOS6JAPDCQRL \
  | 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: 53c08117f13b9306304e9792078c508aecdb327cd0888254f668651733ffd9de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d01ce269d838563a22c84b56b9ea9d44001d58ad41c2dc72bd34f57bd14144f5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-04-06T21:26:28Z",
    "title_canon_sha256": "21db98543e4649bad367aa33a30d8ed2540933b86d43315d2d31e7b64d7d3d98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.02025",
    "kind": "arxiv",
    "version": 1
  }
}