Pith Number

pith:IA4JZ2DU

pith:2019:IA4JZ2DUCQ26KD6E5WEJFRDHDP

not attested not anchored not stored refs pending

Isogeometric Analysis for Surface PDEs with Extended Loop Subdivision

Chong Chen, Gang Xu, Qing Pan, Timon Rabczuk

arxiv:1905.02977 v1 · 2019-05-08 · 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{IA4JZ2DUCQ26KD6E5WEJFRDHDP}

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	2026-06-04T20:14:29.260138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40389ce8741435e50fc4ed8892c4671bc11f7b53589232aa21c04f1ac432d705

Aliases

arxiv: 1905.02977 · arxiv_version: 1905.02977v1 · doi: 10.48550/arxiv.1905.02977 · pith_short_12: IA4JZ2DUCQ26 · pith_short_16: IA4JZ2DUCQ26KD6E · pith_short_8: IA4JZ2DU

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/IA4JZ2DUCQ26KD6E5WEJFRDHDP \
  | 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: 40389ce8741435e50fc4ed8892c4671bc11f7b53589232aa21c04f1ac432d705

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecaddd5dc8863c178c57394efececff66bf1f55dce0dbddc3d4a11ca92f9d88f",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-05-08T09:28:11Z",
    "title_canon_sha256": "0a91556770346ca0f42e1756fc1f75c38502cfe45233d5263b7d21b61a1b6d3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.02977",
    "kind": "arxiv",
    "version": 1
  }
}