Pith Number

pith:LUKYNQAN

pith:2022:LUKYNQANXWSW7BEEP2PUZKZHRY

not attested not anchored not stored refs pending

Stein-based preconditioners for weak-constraint 4D-var

Davide Palitta, Jemima M. Tabeart

arxiv:2203.17184 v3 · 2022-03-31 · 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{LUKYNQANXWSW7BEEP2PUZKZHRY}

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	2026-07-05T05:57:52.696659Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d1586c00dbda56f84847e9f4cab278e23e7a50f4464f0916dafe92086333083

Aliases

arxiv: 2203.17184 · arxiv_version: 2203.17184v3 · doi: 10.48550/arxiv.2203.17184 · pith_short_12: LUKYNQANXWSW · pith_short_16: LUKYNQANXWSW7BEE · pith_short_8: LUKYNQAN

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/LUKYNQANXWSW7BEEP2PUZKZHRY \
  | 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: 5d1586c00dbda56f84847e9f4cab278e23e7a50f4464f0916dafe92086333083

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df896d93824f8d95871295ec7caf722a520affda12f6fdd803f09f77640a5808",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-03-31T16:58:44Z",
    "title_canon_sha256": "d54c2ee6e5415873ea505ae10bbee58ce36094d70a4d88f5d9fa7cca4a07dc6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.17184",
    "kind": "arxiv",
    "version": 3
  }
}