Pith Number

pith:AK7RFQAG

pith:2011:AK7RFQAGIH4CCJ7OFB5R5KYHI4

not attested not anchored not stored refs pending

Determining Key Model Parameters of Rapidly Intensifying Hurricane Guillermo(1997) using the Ensemble Kalman Filter

Alexandre O. Fierro, Humberto C. Godinez, Jim Kao, Jon M. Reisner, Stephen R. Guimond

arxiv:1107.4407 v2 · 2011-07-22 · physics.geo-ph · cs.SY · 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{AK7RFQAGIH4CCJ7OFB5R5KYHI4}

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	2026-05-18T02:01:11.647181Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

02bf12c00641f82127ee287b1eab07471d8e28b891abb70b3598e5e796f8473a

Aliases

arxiv: 1107.4407 · arxiv_version: 1107.4407v2 · doi: 10.48550/arxiv.1107.4407 · pith_short_12: AK7RFQAGIH4C · pith_short_16: AK7RFQAGIH4CCJ7O · pith_short_8: AK7RFQAG

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/AK7RFQAGIH4CCJ7OFB5R5KYHI4 \
  | 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: 02bf12c00641f82127ee287b1eab07471d8e28b891abb70b3598e5e796f8473a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89db5bbd5857db5f4b869dcd40ba51c3c5323bccb55f83e8beeee57112a6dd5c",
    "cross_cats_sorted": [
      "cs.SY",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2011-07-22T01:27:26Z",
    "title_canon_sha256": "5eba2e32caf285da9e72c4fe7417641139ffa68fe57db502525a270069d5dfc8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.4407",
    "kind": "arxiv",
    "version": 2
  }
}