Mathematician:Helmut Hasse

German mathematician who worked mainly in algebraic number theory and class field theory.

Nationality
German

History

 * Born: 25 August 1898, Kassel, Germany
 * Died: 26 December 1979, Ahrensburg (near Hamburg), Germany

Theorems and Definitions

 * Hasse Diagram
 * Hasse Invariant (Elliptic Curve)
 * Hasse Invariant (Quadratic Form) otherwise known as Hasse-Witt Invariant
 * Hasse-Witt Matrix
 * Artin-Hasse Exponential
 * Hasse-Weil L-Function
 * Hasse Norm Theorem
 * Hasse's Theorem on Elliptic Curves

Books, Publications, etc.

 * 1921: Über die Darstellbarkeit von Zahlen durch quadratische Formen im Körper der rationalen Zahlen (doctoral thesis)
 * 1921: Über die Aquivalenz quadratischer Formen im Körper der rationalen Zahlen (habilitation thesis)
 * 1949: Über die Klassenzahl abelscher Zahlkörper
 * 1949: Zahlentheorie (Number Theory) (3 editions: 1949, 1962, 1969; English translation 1970)