Dummit Foote Solutions Chapter 4 [2021] Access
: First recognize ( H ) is the Klein 4-group, normal in ( A_4 ). But in ( S_4 )? Compute orbit size via orbit-stabilizer: ( |\mathcalO_H| = [G : N_G(H)] ).
: First recognize ( H ) is the Klein 4-group, normal in ( A_4 ). But in ( S_4 )? Compute orbit size via orbit-stabilizer: ( |\mathcalO_H| = [G : N_G(H)] ).