Pith Number

pith:276JKK2K

pith:2009:276JKK2KSE55S7JHEPBJNCS2AQ

not attested not anchored not stored refs pending

A localization technique for ensemble Kalman filters

Kay Bergemann, Sebastian Reich

arxiv:0909.1678 v3 · 2009-09-09 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{276JKK2KSE55S7JHEPBJNCS2AQ}

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	2026-06-03T23:06:28.810661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7fc952b4a913bd97d2723c2968a5a0425adbfe1e77a585ae390f575daa39e26

Aliases

arxiv: 0909.1678 · arxiv_version: 0909.1678v3 · doi: 10.48550/arxiv.0909.1678 · pith_short_12: 276JKK2KSE55 · pith_short_16: 276JKK2KSE55S7JH · pith_short_8: 276JKK2K

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/276JKK2KSE55S7JHEPBJNCS2AQ \
  | 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: d7fc952b4a913bd97d2723c2968a5a0425adbfe1e77a585ae390f575daa39e26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2325c2614a20d02efcc6652127792fe67c2895b1d9663ef076f48cf6bad4026d",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-09-09T11:13:15Z",
    "title_canon_sha256": "ffcd4e73fc6c73588042560f92bb069d3f8babfc0792fb0cf71c1a479143d4e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1678",
    "kind": "arxiv",
    "version": 3
  }
}