Pith Number

pith:GI2TO7EJ

pith:2018:GI2TO7EJFEC7OAHSI6M32CFSTS

not attested not anchored not stored refs pending

Validation of a PETSc based software implementing a 4DVAR Data Assimilation algorithm: a case study related with an Oceanic Model based on Shallow Water equation

Emil M. Constantinescu, Luisa Carracciuolo, Luisa D'Amore

arxiv:1810.01361 v2 · 2018-10-02 · cs.MS · cs.CE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GI2TO7EJFEC7OAHSI6M32CFSTS}

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	2026-05-18T00:04:12.313818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3235377c892905f700f24799bd08b29c9ec6955ac276bd1e014e5e618e40964f

Aliases

arxiv: 1810.01361 · arxiv_version: 1810.01361v2 · doi: 10.48550/arxiv.1810.01361 · pith_short_12: GI2TO7EJFEC7 · pith_short_16: GI2TO7EJFEC7OAHS · pith_short_8: GI2TO7EJ

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/GI2TO7EJFEC7OAHSI6M32CFSTS \
  | 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: 3235377c892905f700f24799bd08b29c9ec6955ac276bd1e014e5e618e40964f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "483048972792c5ac2692df9c78c35a0d74ef90bab02c89e41df8d7e293c35874",
    "cross_cats_sorted": [
      "cs.CE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2018-10-02T16:38:07Z",
    "title_canon_sha256": "b002af9233d7063d669f1bf4a1ea8604e9510f64d62fe1ff1eaeace0e07ac24b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.01361",
    "kind": "arxiv",
    "version": 2
  }
}