Recent content by john_nj

  1. J

    Normal subgroup of a product of simple groups

    Thank you. It's now clear.
  2. J

    Normal subgroup of a product of simple groups

    Homework Statement This is an exercise from Jacobson Algebra I, which has me stumped. Let G = G1 x G2 be a group, where G1 and G2 are simple groups. Prove that every proper normal subgroup K of G is isomorphic to G1 or G2. Homework Equations The Attempt at a Solution Certainly...