Leipäjuusto Leipäjuusto Leipäjuusto (bread cheese) or juustoleipä, which is also known in the United States as Finnish squeaky cheese, is a fresh cheese traditionally made from cow's beestings, rich milk from a cow that has recently calved. Reindeer or even goat milk can also be used. Commercially available versions are typically made from cow's milk, and they lack some of the colour and flavour because of this. The cheese originally comes from Southern Ostrobothnia, Northern Finland, and Kainuu. The milk is curdled and set to form a round disk from two to three centimeters thick. After this, leipäjuusto is baked, grilled,
Hasse invariant of a quadratic form Hasse invariant of a quadratic form In mathematics, the Hasse invariant (or Hasse–Witt invariant) of a quadratic form "Q" over a field "K" takes values in the Brauer group Br("K"). The name "Hasse–Witt" comes from Helmut Hasse and Ernst Witt. The quadratic form "Q" may be taken as a diagonal form Its invariant is then defined as the product of the classes in the Brauer group of all the quaternion algebras This is independent of the diagonal form chosen to compute it. It may also be viewed as the second Stiefel–Whitney class of "Q". The invariant may be computed for