Pith Number

pith:2JK436ER

pith:2012:2JK436ERQFMBQYH6LGOZA74DTY

not attested not anchored not stored refs pending

Ensemble Kalman filtering with residual nudging

Ibrahim Hoteit, Xiaodong Luo

arxiv:1210.1318 v1 · 2012-10-04 · 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{2JK436ERQFMBQYH6LGOZA74DTY}

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	2026-05-18T03:44:03.925611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d255cdf89181581860fe599d907f839e1e5a9bee998c813709f6643b3371ad0b

Aliases

arxiv: 1210.1318 · arxiv_version: 1210.1318v1 · doi: 10.48550/arxiv.1210.1318 · pith_short_12: 2JK436ERQFMB · pith_short_16: 2JK436ERQFMBQYH6 · pith_short_8: 2JK436ER

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/2JK436ERQFMBQYH6LGOZA74DTY \
  | 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: d255cdf89181581860fe599d907f839e1e5a9bee998c813709f6643b3371ad0b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bd0e473b07acf083237c5c560e1831c8f3cf5fbff911d38dade701d84928db1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2012-10-04T07:23:46Z",
    "title_canon_sha256": "0dd84362ec2219ef812716028e6dd76406ce2640d6a17bf835d69a0aedc68a35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.1318",
    "kind": "arxiv",
    "version": 1
  }
}