Pith Number

pith:HZU35FGA

pith:2016:HZU35FGAAWDAJNQKNBJ2OONJEQ

not attested not anchored not stored refs pending

Fast formation of isogeometric Galerkin matrices by weighted quadrature

Francesco Calabr\`o, Giancarlo Sangalli, Mattia Tani

arxiv:1605.01238 v2 · 2016-05-04 · 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{HZU35FGAAWDAJNQKNBJ2OONJEQ}

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	2026-05-18T00:47:14.804789Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e69be94c0058604b60a6853a739a9243b4a8a37a4af2a5fac8d3e8f229ad68e

Aliases

arxiv: 1605.01238 · arxiv_version: 1605.01238v2 · doi: 10.48550/arxiv.1605.01238 · pith_short_12: HZU35FGAAWDA · pith_short_16: HZU35FGAAWDAJNQK · pith_short_8: HZU35FGA

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/HZU35FGAAWDAJNQKNBJ2OONJEQ \
  | 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: 3e69be94c0058604b60a6853a739a9243b4a8a37a4af2a5fac8d3e8f229ad68e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6649867d2c3d06a37453ba59a5aaad01b702fdff49f6d64d938a9fab4963f368",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-05-04T11:54:34Z",
    "title_canon_sha256": "8caa29d4ac8df5031249a4ca46ebbd037c6225608b80947842dafd3e274bccec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.01238",
    "kind": "arxiv",
    "version": 2
  }
}