Pith Number

pith:BKFVBZAY

pith:2013:BKFVBZAYEXQXLVW3DFUHT6BCAN

not attested not anchored not stored refs pending

Explicit Reduced-Order Integral Formulations of State and Parameter Estimation Problems for a Class of Nonlinear Systems

A.N. Gorban, I.Yu. Tyukin

arxiv:1304.1648 v3 · 2013-04-05 · 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{BKFVBZAYEXQXLVW3DFUHT6BCAN}

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	2026-05-18T03:13:45.967477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a8b50e41825e175d6db196879f822035a47e3c298e46414439465fdce2a96b2

Aliases

arxiv: 1304.1648 · arxiv_version: 1304.1648v3 · doi: 10.48550/arxiv.1304.1648 · pith_short_12: BKFVBZAYEXQX · pith_short_16: BKFVBZAYEXQXLVW3 · pith_short_8: BKFVBZAY

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/BKFVBZAYEXQXLVW3DFUHT6BCAN \
  | 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: 0a8b50e41825e175d6db196879f822035a47e3c298e46414439465fdce2a96b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e46503c1faa274504e5743c3f27b5a27822bef26a0789ecf44e89ddd7c37390c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2013-04-05T09:10:45Z",
    "title_canon_sha256": "c142d6c5b66830aafa027d011803e38df7dfcf26d7c90990a287bae76124b628"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1648",
    "kind": "arxiv",
    "version": 3
  }
}