Pith Number

pith:3HUP6ZOT

pith:2011:3HUP6ZOT26NWB4V7B24SHS7KHS

not attested not anchored not stored refs pending

Particle Kalman Filtering: A Nonlinear Bayesian Framework for Ensemble Kalman Filters

Dinh-Tuan Pham, Ibrahim Hoteit, Xiaodong Luo

arxiv:1108.0168 v1 · 2011-07-31 · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3HUP6ZOT26NWB4V7B24SHS7KHS}

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	2026-05-18T02:01:05.113134Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9e8ff65d3d79b60f2bf0eb923cbea3c85c07c463a85cca3de17c3315503be00

Aliases

arxiv: 1108.0168 · arxiv_version: 1108.0168v1 · doi: 10.48550/arxiv.1108.0168 · pith_short_12: 3HUP6ZOT26NW · pith_short_16: 3HUP6ZOT26NWB4V7 · pith_short_8: 3HUP6ZOT

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/3HUP6ZOT26NWB4V7B24SHS7KHS \
  | 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: d9e8ff65d3d79b60f2bf0eb923cbea3c85c07c463a85cca3de17c3315503be00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6542df04bb0aa0ad193237f21a885513451429626c22b41666747515a60273e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2011-07-31T11:54:12Z",
    "title_canon_sha256": "6e215de878b76b30e06568a1adb4d0e6693073bf0ce19080c3d37c2ad52be791"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.0168",
    "kind": "arxiv",
    "version": 1
  }
}