Pith Number

pith:V4DIJNDP

pith:2013:V4DIJNDPUW6MXVYO4TYAGTWO7Q

not attested not anchored not stored refs pending

1D+4D-VAR data assimilation of lightning with WRFDA system using nonlinear observation operators

Henry Fuelberg, I. Michael Navon, Max Marchand, Razvan Stefanescu

arxiv:1306.1884 v1 · 2013-06-08 · math.OC · physics.ao-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V4DIJNDPUW6MXVYO4TYAGTWO7Q}

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	2026-05-18T03:21:22.982719Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af0684b46fa5bccbd70ee4f0034ecefc3f9fda1e27981f5bf93f03d25e01f2e3

Aliases

arxiv: 1306.1884 · arxiv_version: 1306.1884v1 · doi: 10.48550/arxiv.1306.1884 · pith_short_12: V4DIJNDPUW6M · pith_short_16: V4DIJNDPUW6MXVYO · pith_short_8: V4DIJNDP

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/V4DIJNDPUW6MXVYO4TYAGTWO7Q \
  | 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: af0684b46fa5bccbd70ee4f0034ecefc3f9fda1e27981f5bf93f03d25e01f2e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1e16c8be29a89f23085e32c82a5b1687e2e3308b67bf2ac8ff6468f4b7a2ef7",
    "cross_cats_sorted": [
      "physics.ao-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2013-06-08T05:18:08Z",
    "title_canon_sha256": "ddd989f6012ef19d638aa757881cf089b02a36d29bf4a87c61e5217dea8e82e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.1884",
    "kind": "arxiv",
    "version": 1
  }
}