**Hans Freudenthal** (17 September 1905 – 13 October 1990) was a Dutch mathematician, who worked in algebraic topology and also created an influential direction in mathematics education.

Introducing the Freudenthal suspension theorem (and the terminology “stem of homotopy groups of spheres”):

- Hans Freudenthal, first paragraph of:
*Über die Klassen der Sphärenabbildungen I. Große Dimensionen*, Compositio Mathematica, Tome 5 (1938) , pp. 299-314 (numdam:CM_1938__5__299_0)

On Lie groups:

- Hans Freudenthal,
*Lie groups in the foundations of geometry*, Advances in Mathematics**1**(1965) 145 - 190 (dspace)

On teaching mathematics:

- Hans Freudenthal,
*Why to teach mathematics so as to be useful*, 1968, pdf

category: people

Last revised on February 26, 2021 at 17:00:51. See the history of this page for a list of all contributions to it.