Pith Number

pith:A6O5VN3L

pith:2017:A6O5VN3L7OVU5GNPU7PPAFIV27

not attested not anchored not stored refs pending

Matrix-free weighted quadrature for a computationally efficient isogeometric $k$-method

Giancarlo Sangalli, Mattia Tani

arxiv:1712.08565 v2 · 2017-12-22 · 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{A6O5VN3L7OVU5GNPU7PPAFIV27}

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	2026-05-18T00:15:19.115107Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

079ddab76bfbab4e99afa7def01515d7c1bb32ec1479b8729148511c67984275

Aliases

arxiv: 1712.08565 · arxiv_version: 1712.08565v2 · doi: 10.48550/arxiv.1712.08565 · pith_short_12: A6O5VN3L7OVU · pith_short_16: A6O5VN3L7OVU5GNP · pith_short_8: A6O5VN3L

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/A6O5VN3L7OVU5GNPU7PPAFIV27 \
  | 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: 079ddab76bfbab4e99afa7def01515d7c1bb32ec1479b8729148511c67984275

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d9889ffd1317550436e2d73443f9f11198ab29641223885f807ec906de8d429",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-12-22T16:42:55Z",
    "title_canon_sha256": "81060f19ee3f4668305dca4f492b9bc229108fa8094b09baebfb213edca93b30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.08565",
    "kind": "arxiv",
    "version": 2
  }
}