Pith Number

pith:FXCQ3RZ3

pith:2013:FXCQ3RZ3X7VHKXTJQG2CMECI5G

not attested not anchored not stored refs pending

Non-global parameter estimation using local ensemble Kalman filtering

Jesse Berwald, Lewis Mitchell, Thomas Bellsky

arxiv:1306.3488 v2 · 2013-06-14 · physics.data-an · nlin.CD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FXCQ3RZ3X7VHKXTJQG2CMECI5G}

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	2026-05-18T02:43:52.426831Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2dc50dc73bbfea755e6981b4261048e99e662f805272995ae4a2748877f0dbac

Aliases

arxiv: 1306.3488 · arxiv_version: 1306.3488v2 · doi: 10.48550/arxiv.1306.3488 · pith_short_12: FXCQ3RZ3X7VH · pith_short_16: FXCQ3RZ3X7VHKXTJ · pith_short_8: FXCQ3RZ3

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/FXCQ3RZ3X7VHKXTJQG2CMECI5G \
  | 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: 2dc50dc73bbfea755e6981b4261048e99e662f805272995ae4a2748877f0dbac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68745221c8511b56f65c4036f26a64dafd39b03e8b55e6a6bf1dec79a3e54555",
    "cross_cats_sorted": [
      "nlin.CD"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2013-06-14T19:11:12Z",
    "title_canon_sha256": "1c855bad47651de37f1d37e49ea0be72051f4220cd0f3ae735c2a36e0cf59140"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.3488",
    "kind": "arxiv",
    "version": 2
  }
}