Pith Number

pith:E6ISNIQV

pith:2018:E6ISNIQV7L2SQ73BPFU4BJLQCR

not attested not anchored not stored refs pending

Shape Optimization using the Finite Element Method on Multiple Meshes

August Johansson, Jorgen S. Dokken, Simon W. Funke, Stephan Schmidt

arxiv:1806.09821 v1 · 2018-06-26 · 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{E6ISNIQV7L2SQ73BPFU4BJLQCR}

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	2026-05-18T00:12:23.243305Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

279126a215faf5287f617969c0a5701444327fa1d8071eeb8720e82c1e254b72

Aliases

arxiv: 1806.09821 · arxiv_version: 1806.09821v1 · doi: 10.48550/arxiv.1806.09821 · pith_short_12: E6ISNIQV7L2S · pith_short_16: E6ISNIQV7L2SQ73B · pith_short_8: E6ISNIQV

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/E6ISNIQV7L2SQ73BPFU4BJLQCR \
  | 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: 279126a215faf5287f617969c0a5701444327fa1d8071eeb8720e82c1e254b72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67e950010b6b4a5179f0ab6bb542afa9925dd000e2d039b63ec469223721aa54",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-06-26T07:29:37Z",
    "title_canon_sha256": "588e32a8490cf05bd36e996130e512d9464e9ca7f5d15b2e394d2a825a214e54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.09821",
    "kind": "arxiv",
    "version": 1
  }
}