Pith Number

pith:HTQA6WAG

pith:2021:HTQA6WAGGIV72LA5L2KL7JZNHU

not attested not anchored not stored refs pending

Multilevel approximation of Gaussian random fields: Covariance compression, estimation and spatial prediction

Christoph Schwab, Helmut Harbrecht, Kristin Kirchner, Lukas Herrmann

arxiv:2103.04424 v1 · 2021-03-07 · math.ST · cs.NA · math.NA · math.PR · stat.TH

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HTQA6WAGGIV72LA5L2KL7JZNHU}

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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.

Cited by

1 paper in Pith

Precision and Cholesky Factor Estimation for Gaussian Processes

Receipt and verification

First computed	2026-07-05T02:21:05.453651Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ce00f5806322bfd2c1d5e94bfa72d3d3c74e22ceb06afa3256a15cb64ee125c

Aliases

arxiv: 2103.04424 · arxiv_version: 2103.04424v1 · doi: 10.48550/arxiv.2103.04424 · pith_short_12: HTQA6WAGGIV7 · pith_short_16: HTQA6WAGGIV72LA5 · pith_short_8: HTQA6WAG

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/HTQA6WAGGIV72LA5L2KL7JZNHU \
  | 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: 3ce00f5806322bfd2c1d5e94bfa72d3d3c74e22ceb06afa3256a15cb64ee125c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70342113a73d32e403781c2fef004711a60d852596cbadc1a3a6e4005f1c4cec",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA",
      "math.PR",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2021-03-07T18:45:57Z",
    "title_canon_sha256": "df72259a67f52fece8f95010d12c426440ce6f9257e88e0006e261e1c6ff17fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.04424",
    "kind": "arxiv",
    "version": 1
  }
}