• closedAccess   Landau's theorem on conjugacy classes for normal subgroups 

      Beltrán, Antonio; Felipe, Maria José; Melchor Borja, Carmen World Scientific (2016-10-10)
      Landau’s theorem on conjugacy classes asserts that there are only finitely many finite groups, up to isomorphism, with exactly k conjugacy classes for any positive integer k. We show that, for any positive integers n and ...