Pith Number

pith:LFTJPT5V

pith:2026:LFTJPT5VCOTLBAYEVOU4L6EEIN

not attested not anchored not stored refs pending

Dynamical Low-Rank Filters for Data Assimilation

Fabio Nobile, Fabio Zoccolan, Yoshihito Kazashi, Youssef Marzouk

arxiv:2607.27432 v1 · 2026-07-29 · 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{LFTJPT5VCOTLBAYEVOU4L6EEIN}

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	2026-07-31T00:12:02.965499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

596697cfb513a6b08304aba9c5f884437da3a406c5bbe76212fc91b36d976967

Aliases

arxiv: 2607.27432 · arxiv_version: 2607.27432v1 · doi: 10.48550/arxiv.2607.27432 · pith_short_12: LFTJPT5VCOTL · pith_short_16: LFTJPT5VCOTLBAYE · pith_short_8: LFTJPT5V

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/LFTJPT5VCOTLBAYEVOU4L6EEIN \
  | 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: 596697cfb513a6b08304aba9c5f884437da3a406c5bbe76212fc91b36d976967

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e7c2b25e37c3f83cc5ee75f3c49a7cba280493cf0ad0450d2f9f350751c4b74",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-07-29T20:00:11Z",
    "title_canon_sha256": "f7877d016677aec6cdfd09ec4cccfc2931ad4acdb9fa33a1e1618a27c5428cff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.27432",
    "kind": "arxiv",
    "version": 1
  }
}