Pith Number

pith:DIJ72AKF

pith:2018:DIJ72AKFZLOBP367O4RMCHBT52

not attested not anchored not stored refs pending

On the convergence of data assimilation for the one-dimensional shallow water equations with sparse observations

B. Protas, N. K.-R. Kevlahan, R. Khan

arxiv:1802.04393 v2 · 2018-02-12 · physics.flu-dyn · math.OC · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DIJ72AKFZLOBP367O4RMCHBT52}

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	2026-07-05T00:47:14.996394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a13fd0145cadc17efdf7722c11c33eeb580f2a722838678b5fb44e8442e8fcd

Aliases

arxiv: 1802.04393 · arxiv_version: 1802.04393v2 · doi: 10.48550/arxiv.1802.04393 · pith_short_12: DIJ72AKFZLOB · pith_short_16: DIJ72AKFZLOBP367 · pith_short_8: DIJ72AKF

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/DIJ72AKFZLOBP367O4RMCHBT52 \
  | 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: 1a13fd0145cadc17efdf7722c11c33eeb580f2a722838678b5fb44e8442e8fcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91b32474f18def3e9a93b9704a438006a45bddd7434e6cc01439abe39c9ee4aa",
    "cross_cats_sorted": [
      "math.OC",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2018-02-12T23:24:28Z",
    "title_canon_sha256": "5d1d7e39024638543dfcd9a6da698dc4134885334843ab44207bb639d4e5930f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.04393",
    "kind": "arxiv",
    "version": 2
  }
}