Dedekind, Richard (1831-1916)

Dedekind was a German mathematician who worked in the area od abstract algebra and algebraic number theory. He developed a major redefintion of irrational numbers through his Dedekind cut where an irrational number is a boundary that separates two collections of rational numbers where every member of one set is strictly larger than the members of the other set.

Stamps

Stamp	Description
	German Demoncratic Republic, 25pf, 1981 Scott: 2181 A658