Pith Number

pith:BQ5JFE43

pith:2012:BQ5JFE437M22HAYW6ZFIQ3QDLF

not attested not anchored not stored refs pending

Approximation of the Laplace and Stokes operators with Dirichlet boundary conditions through volume penalization: a spectral viewpoint

Dmitry Kolomenskiy, Kai Schneider, Romain Nguyen van yen

arxiv:1206.0002 v1 · 2012-05-31 · physics.flu-dyn · 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{BQ5JFE437M22HAYW6ZFIQ3QDLF}

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	2026-05-18T03:54:27.262032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c3a92939bfb35a38316f64a886e03594ffa8cb6f3e8640ff0d0000faa38e02c

Aliases

arxiv: 1206.0002 · arxiv_version: 1206.0002v1 · doi: 10.48550/arxiv.1206.0002 · pith_short_12: BQ5JFE437M22 · pith_short_16: BQ5JFE437M22HAYW · pith_short_8: BQ5JFE43

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/BQ5JFE437M22HAYW6ZFIQ3QDLF \
  | 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: 0c3a92939bfb35a38316f64a886e03594ffa8cb6f3e8640ff0d0000faa38e02c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec5ced562daa226ff2bc417eaae5309a70d6249cabdc6a0c4bbfba91eb2dee62",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2012-05-31T09:59:52Z",
    "title_canon_sha256": "8c8d25b2907e3a8e8e418feac8f9ea70e5dc6b0935e4016453db2ed014edcf18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.0002",
    "kind": "arxiv",
    "version": 1
  }
}