Mathematician:Hans Freudenthal

Mathematician
German born Dutch mathematician, made substantial contributions to algebraic topology.

Took an interest in literature, philosophy, history and mathematics education.

One of the most important figures in mathematics education in the $20$th century.

Nationality
German, later Dutch

History

 * Born: 17 September 1905 in Luckenwalde, Germany
 * Died: 13 October 1990 in Utrecht, The Netherlands

Theorems and Definitions

 * Freudenthal Algebra
 * Freudenthal Magic Square
 * Freudenthal Spectral Theorem
 * Freudenthal's Suspension Theorem
 * Impossible Puzzle

Publications







 * 1960: Lincos: design of a language for cosmic intercourse
 * 1969: Linear Lie Groups (with )
 * 1972: Mathematics as an Educational Task
 * 1986: Didactical Phenomenology of Mathematical Structures
 * 1991: Revisiting Mathematics Education
 * 2015: El viaje de Ofantito (with )


 * 1968: Founded the journal