Pith Number

pith:7COWSYJM

pith:2014:7COWSYJM64D3CWJVV6RBKU6WBK

not attested not anchored not stored refs pending

Ensemble Kalman filtering with residual nudging: an extension to state estimation problems with nonlinear observation operators

Ibrahim Hoteit, Xiaodong Luo

arxiv:1406.4307 v1 · 2014-06-17 · physics.ao-ph · math.OC · nlin.CD · physics.data-an · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7COWSYJM64D3CWJVV6RBKU6WBK}

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	2026-05-18T02:45:03.982208Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f89d69612cf707b15935afa21553d60a920f8f13d39838099aec8b4d0d2d273d

Aliases

arxiv: 1406.4307 · arxiv_version: 1406.4307v1 · doi: 10.48550/arxiv.1406.4307 · pith_short_12: 7COWSYJM64D3 · pith_short_16: 7COWSYJM64D3CWJV · pith_short_8: 7COWSYJM

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/7COWSYJM64D3CWJVV6RBKU6WBK \
  | 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: f89d69612cf707b15935afa21553d60a920f8f13d39838099aec8b4d0d2d273d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9396c3a5ed415293e589789569a47d3b3acf5305bc3bdf08a7a6bdc3b0fe1998",
    "cross_cats_sorted": [
      "math.OC",
      "nlin.CD",
      "physics.data-an",
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2014-06-17T10:33:46Z",
    "title_canon_sha256": "9dfdc61e398e578696589a9c5cb25e251ef2e71d918305b571d937fa7d31908c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.4307",
    "kind": "arxiv",
    "version": 1
  }
}