Mathematician:Helmut Hasse

German mathematician who worked mainly in algebraic number theory and class field theory. Not to be confused with Henry Hasse, the science fiction writer of the 1930's.

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 (with Ernst Witt)
 * Hasse-Witt Matrix (with Ernst Witt)
 * Artin-Hasse Exponential (with Emil Artin)
 * Hasse-Weil L-Function (with André Weil)
 * Hasse Condition
 * Hasse Principle
 * Hasse-Arf Theorem (with Cahit Arf)
 * Hasse-Minkowski Theorem (with Hermann Minkowski)
 * Hasse-Davenport Relation (with Harold Davenport)
 * 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)
 * 1932: Beweis eines Hauptsatzes in der Theorie der Algebren (Proof of a Main Theorem in the Theory of Algebras) (with Richard Brauer and Emmy Noether)
 * 1949: Über die Klassenzahl abelscher Zahlkörper
 * 1949: (Number Theory) (3 editions: 1949, 1962, 1969; English translation 1970)
 * 1949: Über die Klassenzahl abelscher Zahlkörper
 * 1949: (Number Theory) (3 editions: 1949, 1962, 1969; English translation 1970)
 * 1949: Über die Klassenzahl abelscher Zahlkörper
 * 1949: (Number Theory) (3 editions: 1949, 1962, 1969; English translation 1970)