Pith Number

pith:5ABBFOCL

pith:2016:5ABBFOCLB4DWAZJ72LY5WI3ATY

not attested not anchored not stored refs pending

A data-driven method for improving the correlation estimation in serial ensemble Kalman filters

John Harlim, Mich\`ele De La Chevroti\`ere

arxiv:1607.02538 v2 · 2016-07-08 · math.ST · math.NA · stat.TH

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

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	2026-05-18T00:47:13.996021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e80212b84b0f0760653fd2f1db23609e39e9007877a44e6394240487687032a3

Aliases

arxiv: 1607.02538 · arxiv_version: 1607.02538v2 · doi: 10.48550/arxiv.1607.02538 · pith_short_12: 5ABBFOCLB4DW · pith_short_16: 5ABBFOCLB4DWAZJ7 · pith_short_8: 5ABBFOCL

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/5ABBFOCLB4DWAZJ72LY5WI3ATY \
  | 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: e80212b84b0f0760653fd2f1db23609e39e9007877a44e6394240487687032a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40cd92dddf2addb793d236c48671564153b349a160f188eebb5f8f6d0087e850",
    "cross_cats_sorted": [
      "math.NA",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2016-07-08T22:19:14Z",
    "title_canon_sha256": "28f8fd8e26e1e376d03f73dec7424204ee5816fc8b06257e3080e6fa958c8b89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.02538",
    "kind": "arxiv",
    "version": 2
  }
}