{
  "title": "Class Group of Quadratic Number Field",
  "origin_url": "https://www.math.tu-berlin.de/~kant/kash.html",
  "license_guess": null,
  "code_sha256": "e8da950eb7db17cfec23e92622da8f53b8bc0726411adabbe7eda1b6d3902710",
  "added_at": "2026-03-10T12:00:00Z"
}