Pith Number

pith:6OV5GMCV

pith:2018:6OV5GMCVDHY6OTBYL6HXPQ7IWI

not attested not anchored not stored refs pending

Model reduction by separation of variables: a comparison between Hierarchical Model reduction and Proper Generalized Decomposition

Francesco Ballarin, Michele Giuliano Carlino, Simona Perotto

arxiv:1811.11486 v1 · 2018-11-28 · 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{6OV5GMCVDHY6OTBYL6HXPQ7IWI}

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	2026-06-04T20:13:43.933779Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3abd3305519f1e74c385f8f77c3e8b239bfe99cad4a312f4ee1ebc99cd0aeee

Aliases

arxiv: 1811.11486 · arxiv_version: 1811.11486v1 · doi: 10.48550/arxiv.1811.11486 · pith_short_12: 6OV5GMCVDHY6 · pith_short_16: 6OV5GMCVDHY6OTBY · pith_short_8: 6OV5GMCV

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/6OV5GMCVDHY6OTBYL6HXPQ7IWI \
  | 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: f3abd3305519f1e74c385f8f77c3e8b239bfe99cad4a312f4ee1ebc99cd0aeee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a2d3f3f251db252c5ff0e32e5d42b74000b1ecaa24d04bd9ce22862b38939a7",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-11-28T10:29:28Z",
    "title_canon_sha256": "29ca584b83b46a59e4506419aa08b1dbb1c5b7f905df2aed588e738553339e53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.11486",
    "kind": "arxiv",
    "version": 1
  }
}