Pith Number

pith:ZL7FVS2B

pith:2018:ZL7FVS2BMHUW4QV355SUK5IMQL

not attested not anchored not stored refs pending

Improved Efficiency of a Multi-Index FEM for Computational Uncertainty Quantification

Christoph Schwab, Josef Dick, Michael Feischl

arxiv:1806.04159 v2 · 2018-06-11 · 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{ZL7FVS2BMHUW4QV355SUK5IMQL}

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	2026-05-17T23:40:24.089401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cafe5acb4161e96e42bbef6545750c82dd87e4d9cca7eb480481ca94f389be4f

Aliases

arxiv: 1806.04159 · arxiv_version: 1806.04159v2 · doi: 10.48550/arxiv.1806.04159 · pith_short_12: ZL7FVS2BMHUW · pith_short_16: ZL7FVS2BMHUW4QV3 · pith_short_8: ZL7FVS2B

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/ZL7FVS2BMHUW4QV355SUK5IMQL \
  | 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: cafe5acb4161e96e42bbef6545750c82dd87e4d9cca7eb480481ca94f389be4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "309b8e5c3d455d3bd57c78a8299e80fc729c83ee858fb516fcd9108e6b780e1b",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-06-11T18:03:00Z",
    "title_canon_sha256": "49fa062b484720ed0e8ed9462a73f44438993403af5b7f7dc7de84fbf834f84b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.04159",
    "kind": "arxiv",
    "version": 2
  }
}