Zassenhaus
Zassenhaus is a surname most prominently associated with Hans Zassenhaus, a German-born mathematician who later worked in the United States. His research spanned group theory, Lie algebras, and computational algebra, and several results bear his name.
In pure mathematics, the Zassenhaus lemma (also known as the butterfly lemma) is a classical result about
In Lie theory, the Zassenhaus formula describes a product decomposition for the exponential of a sum of
In computational algebra, the Zassenhaus algorithm (or Zassenhaus factoring method) is a method for factoring polynomials
The surname Zassenhaus thus identifies a suite of foundational ideas in algebra and its applications, reflecting