Pith Number

pith:QNLDKRCV

pith:2006:QNLDKRCVLLOPG3DGZ4XETNC3UP

not attested not anchored not stored refs pending

A matrix approach to the computation of quadrature formulas on the unit circle

Maria Jose Cantero, Pablo Gonzalez-Vera, Ruyman Cruz-Barroso

arxiv:math/0606388 v1 · 2006-06-16 · 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{QNLDKRCVLLOPG3DGZ4XETNC3UP}

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	2026-06-03T22:06:19.908737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83563544555adcf36c66cf2e49b45ba3ff41cfdc79d85490b8f9bf56eeece389

Aliases

arxiv: math/0606388 · arxiv_version: math/0606388v1 · doi: 10.48550/arxiv.math/0606388 · pith_short_12: QNLDKRCVLLOP · pith_short_16: QNLDKRCVLLOPG3DG · pith_short_8: QNLDKRCV

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/QNLDKRCVLLOPG3DGZ4XETNC3UP \
  | 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: 83563544555adcf36c66cf2e49b45ba3ff41cfdc79d85490b8f9bf56eeece389

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3af67af93a8e2ae80e535f457a2f1fbda8422d12fc33c19fdcfe23f18ebe012c",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "",
    "primary_cat": "math.NA",
    "submitted_at": "2006-06-16T08:14:58Z",
    "title_canon_sha256": "a31ba0d91fd518a65880e93413f705c780cd9a73dad7ac20b116e88d7e61965b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0606388",
    "kind": "arxiv",
    "version": 1
  }
}