Pith Number

pith:6HNQHXYU

pith:2012:6HNQHXYU532IJHMJSI7ZY4VYZK

not attested not anchored not stored refs pending

Topological Optimization of the Evaluation of Finite Element Matrices

Anders Logg, Andy R. Terrel, L. Ridgway Scott, Robert C. Kirby

arxiv:1205.3001 v1 · 2012-05-14 · 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{6HNQHXYU532IJHMJSI7ZY4VYZK}

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	2026-05-18T03:55:45.519481Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1db03df14eef4849d89923f9c72b8ca87ee1cb8fcf36495861ca96e6d55d9a6

Aliases

arxiv: 1205.3001 · arxiv_version: 1205.3001v1 · doi: 10.48550/arxiv.1205.3001 · pith_short_12: 6HNQHXYU532I · pith_short_16: 6HNQHXYU532IJHMJ · pith_short_8: 6HNQHXYU

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/6HNQHXYU532IJHMJSI7ZY4VYZK \
  | 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: f1db03df14eef4849d89923f9c72b8ca87ee1cb8fcf36495861ca96e6d55d9a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "863f7ec1ed2753254f6cb72d37ca1767cca3e217cb169e5a9996291d3b18c7ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-05-14T12:34:39Z",
    "title_canon_sha256": "071ba4604181b5184dec60639347b9f45c098ae4a044f6a84ca99fe0f9718388"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.3001",
    "kind": "arxiv",
    "version": 1
  }
}