Pith Number

pith:ZP2P5VQR

pith:2025:ZP2P5VQRKBXPQ36EJJKJ4ZGC3C

not attested not anchored not stored refs pending

Numerical study of high-dimensional covariance estimation and localization for data assimilation

Kevin K. Lin, Matthias Morzfeld, Shay Gilpin

arxiv:2508.18299 v1 · 2025-08-22 · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZP2P5VQRKBXPQ36EJJKJ4ZGC3C}

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.

Cited by

1 paper in Pith

Towards Training-Free Underwater 3D Object Detection from Sonar Point Clouds: A Comparison of Traditional and Deep Learning Approaches

Receipt and verification

First computed	2026-07-05T11:58:57.120586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbf4fed611506ef86fc44a549e64c2d8848066738eba3ce828f92e9bbbf6b125

Aliases

arxiv: 2508.18299 · arxiv_version: 2508.18299v1 · doi: 10.48550/arxiv.2508.18299 · pith_short_12: ZP2P5VQRKBXP · pith_short_16: ZP2P5VQRKBXPQ36E · pith_short_8: ZP2P5VQR

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/ZP2P5VQRKBXPQ36EJJKJ4ZGC3C \
  | 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: cbf4fed611506ef86fc44a549e64c2d8848066738eba3ce828f92e9bbbf6b125

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1e5fa57de8dfa2a632ece401d7a33c8d9f7060d89dc6246d78de96ea3c5ec54",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2025-08-22T18:00:20Z",
    "title_canon_sha256": "033fdcbab4161eed415dbbe0bbadd346dbab368ffd2e39a2b001de651977bb49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.18299",
    "kind": "arxiv",
    "version": 1
  }
}