Pith Number

pith:RVZKEXSK

pith:2021:RVZKEXSKEYQME2RFSBBYZA6KYJ

not attested not anchored not stored refs pending

A discontinuous least squares finite element method for Helmholtz equations

Fanyi Yang, Qicheng Liu, Ruo Li

arxiv:2105.01909 v1 · 2021-05-05 · 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{RVZKEXSKEYQME2RFSBBYZA6KYJ}

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	2026-07-05T02:37:50.275122Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d72a25e4a2620c26a2590438c83cac25cdeb0871753a949ff7ba591ff713c33

Aliases

arxiv: 2105.01909 · arxiv_version: 2105.01909v1 · doi: 10.48550/arxiv.2105.01909 · pith_short_12: RVZKEXSKEYQM · pith_short_16: RVZKEXSKEYQME2RF · pith_short_8: RVZKEXSK

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/RVZKEXSKEYQME2RFSBBYZA6KYJ \
  | 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: 8d72a25e4a2620c26a2590438c83cac25cdeb0871753a949ff7ba591ff713c33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4793c6456eef0775a14226a91204642901f32a6bd4a27fbcd9624e5f65208f69",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-05-05T07:46:46Z",
    "title_canon_sha256": "bb2d18a0b83b547b937d85706eea0dff3d02e4a6491e04b14a161157769cda20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.01909",
    "kind": "arxiv",
    "version": 1
  }
}