Pith Number

pith:PKNQ76DE

pith:2014:PKNQ76DE7PMOS6WNAPVSEGAE4C

not attested not anchored not stored refs pending

Exact recursive estimation of linear systems subject to bounded disturbances

robin hill, Uwe Schwerdtfeger, Yousong Luo

arxiv:1405.1506 v1 · 2014-05-07 · 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{PKNQ76DE7PMOS6WNAPVSEGAE4C}

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	2026-05-18T02:52:24.693732Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a9b0ff864fbd8e97acd03eb221804e09e0a70cceaff6114e6c504a511bb5da0

Aliases

arxiv: 1405.1506 · arxiv_version: 1405.1506v1 · doi: 10.48550/arxiv.1405.1506 · pith_short_12: PKNQ76DE7PMO · pith_short_16: PKNQ76DE7PMOS6WN · pith_short_8: PKNQ76DE

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/PKNQ76DE7PMOS6WNAPVSEGAE4C \
  | 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: 7a9b0ff864fbd8e97acd03eb221804e09e0a70cceaff6114e6c504a511bb5da0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1e37f880ceb1b90245f05a0fe886f72e2c1c15568cecb0f482ba649fa691571",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-05-07T05:11:59Z",
    "title_canon_sha256": "d53b1a57f4fdd047824cab62ace7029c052536c04ec918f9b54cd42c24ada67b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.1506",
    "kind": "arxiv",
    "version": 1
  }
}