Pith Number

pith:SBRPLZH7

pith:2014:SBRPLZH7FI7KMBMACTYEOLHXLI

not attested not anchored not stored refs pending

Convergence of discrete time Kalman filter estimate to continuous time estimate

Atte Aalto

arxiv:1408.1275 v2 · 2014-08-06 · 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{SBRPLZH7FI7KMBMACTYEOLHXLI}

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	2026-05-18T01:24:43.982835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9062f5e4ff2a3ea6058014f0472cf75a1af00f6988da84d4892ed3aba39a2a1a

Aliases

arxiv: 1408.1275 · arxiv_version: 1408.1275v2 · doi: 10.48550/arxiv.1408.1275 · pith_short_12: SBRPLZH7FI7K · pith_short_16: SBRPLZH7FI7KMBMA · pith_short_8: SBRPLZH7

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/SBRPLZH7FI7KMBMACTYEOLHXLI \
  | 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: 9062f5e4ff2a3ea6058014f0472cf75a1af00f6988da84d4892ed3aba39a2a1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2481de1ffcde67d1bcb6a6baa5bb244ae100e2bb7e513f9aff3bc9743fe73816",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-08-06T13:42:24Z",
    "title_canon_sha256": "0702261a459fdcc2d79a1ceceb475833e621deb46c71e1c68e85cdc8755d3b23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.1275",
    "kind": "arxiv",
    "version": 2
  }
}