Pith Number

pith:QHNGCSQN

pith:2012:QHNGCSQNA7DU6VDR5HOZ6TDZGF

not attested not anchored not stored refs pending

POD/DEIM Nonlinear model order reduction of an ADI implicit shallow water equations model

Ionel Michael Navon, Razvan Stefanescu

arxiv:1211.2521 v1 · 2012-11-12 · physics.comp-ph · cs.NA · math.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{QHNGCSQNA7DU6VDR5HOZ6TDZGF}

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	2026-05-18T01:53:16.880732Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81da614a0d07c74f5471e9dd9f4c7931760114ebc16c506121863c21da54b80f

Aliases

arxiv: 1211.2521 · arxiv_version: 1211.2521v1 · doi: 10.48550/arxiv.1211.2521 · pith_short_12: QHNGCSQNA7DU · pith_short_16: QHNGCSQNA7DU6VDR · pith_short_8: QHNGCSQN

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/QHNGCSQNA7DU6VDR5HOZ6TDZGF \
  | 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: 81da614a0d07c74f5471e9dd9f4c7931760114ebc16c506121863c21da54b80f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd2f455f4cad6d019d84f3dd4fbd1b6364c7f06e6b73c81f015c8930584b7a7b",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2012-11-12T06:50:21Z",
    "title_canon_sha256": "c8a20b0b5cc47d6892e82c687e9f3588c010f0ce95ba80be7e8a4fe9ee4396fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.2521",
    "kind": "arxiv",
    "version": 1
  }
}