Pith Number

pith:KQCGDOCL

pith:2013:KQCGDOCLVYFGYX4NB5GZQOD7BF

not attested not anchored not stored refs pending

A Unified Filter for Simultaneous Input and State Estimation of Linear Discrete-time Stochastic Systems

Emilio Frazzoli, Minghui Zhu, Sze Zheng Yong

arxiv:1309.6627 v4 · 2013-09-25 · math.OC · 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{KQCGDOCLVYFGYX4NB5GZQOD7BF}

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	2026-05-18T02:49:45.912827Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

540461b84bae0a6c5f8d0f4d98387f0950b96685fca7bcd1e69d5d7455a8404e

Aliases

arxiv: 1309.6627 · arxiv_version: 1309.6627v4 · doi: 10.48550/arxiv.1309.6627 · pith_short_12: KQCGDOCLVYFG · pith_short_16: KQCGDOCLVYFGYX4N · pith_short_8: KQCGDOCL

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/KQCGDOCLVYFGYX4NB5GZQOD7BF \
  | 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: 540461b84bae0a6c5f8d0f4d98387f0950b96685fca7bcd1e69d5d7455a8404e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b5f80445844a0058033587e3e04ed5d32ca053bf585b6cfc75e7b0a459eff7a",
    "cross_cats_sorted": [
      "cs.SY",
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2013-09-25T19:58:15Z",
    "title_canon_sha256": "81bc787ead467b81fe7ba6039a88cf862748b582ddc19cdf663642fda4dccac8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.6627",
    "kind": "arxiv",
    "version": 4
  }
}