I am a former assistant-professor of mathematics at the Univ. of Amsterdam, with specialization in group theory and representation theory of groups. I work for IBM, though not in research.
39 Is $n! + 1$ often a prime? jul 1
20 A group with five elements is Abelian aug 26
13 Subrings of finite index and units dec 14 '11
13 A group of order 561 is cyclic. dec 13 '13
12 Generalization of index 2 subgroups are normal apr 14 '11
11 Applications of the fact that a group is never the union of two of its proper subgroups may 3 '11
11 How do we pronounce this symbol? may 12 '14