Pith Number

pith:WQQZQAMV

pith:2015:WQQZQAMVGSZ3WUGUXHFHOYCDFQ

not attested not anchored not stored refs pending

Nonlinear State Space Model Identification Using a Regularized Basis Function Expansion

Andreas Svensson, Arno Solin, Simo S\"arkk\"a, Thomas B. Sch\"on

arxiv:1510.00563 v1 · 2015-10-02 · stat.CO · cs.SY

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WQQZQAMVGSZ3WUGUXHFHOYCDFQ}

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	2026-05-18T00:58:34.872578Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b42198019534b3bb50d4b9ca7760432c10f8c197990b99b9546c29a0a7ac2ea3

Aliases

arxiv: 1510.00563 · arxiv_version: 1510.00563v1 · doi: 10.48550/arxiv.1510.00563 · pith_short_12: WQQZQAMVGSZ3 · pith_short_16: WQQZQAMVGSZ3WUGU · pith_short_8: WQQZQAMV

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/WQQZQAMVGSZ3WUGUXHFHOYCDFQ \
  | 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: b42198019534b3bb50d4b9ca7760432c10f8c197990b99b9546c29a0a7ac2ea3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "815a203b481783e3f8a798e68c9b7c2e6fb50a6ef7233bf6b6369a94438487ca",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2015-10-02T11:29:58Z",
    "title_canon_sha256": "2a90bfdef1b3f897da63c54878da323c0a6d0a31d4b7d42d715d094f1d05b89b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.00563",
    "kind": "arxiv",
    "version": 1
  }
}