Pith Number

pith:73WHY2YD

pith:2011:73WHY2YD472RZZE5TI6M4U5DWI

not attested not anchored not stored refs pending

Extensions to the Theory of Widely Linear Complex Kalman Filtering

Louis L. Scharf, Wenbing Dang

arxiv:1105.5432 v2 · 2011-05-27 · cs.SY · cs.IT · math.IT · 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{73WHY2YD472RZZE5TI6M4U5DWI}

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	2026-05-18T02:01:50.119475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

feec7c6b03e7f51ce49d9a3cce53a3b20351c8baa06f0686b9b4215ba80521d2

Aliases

arxiv: 1105.5432 · arxiv_version: 1105.5432v2 · doi: 10.48550/arxiv.1105.5432 · pith_short_12: 73WHY2YD472R · pith_short_16: 73WHY2YD472RZZE5 · pith_short_8: 73WHY2YD

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/73WHY2YD472RZZE5TI6M4U5DWI \
  | 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: feec7c6b03e7f51ce49d9a3cce53a3b20351c8baa06f0686b9b4215ba80521d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ee001077c21bf633667a932118b52f058f8e0674a2aa94376d1e85b70ec9d4e",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2011-05-27T00:21:21Z",
    "title_canon_sha256": "72030060173c0e973f6d2a167b2bfa70939aba20ffadf0bdbfc14eeaaea37a23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.5432",
    "kind": "arxiv",
    "version": 2
  }
}