In: Advanced Math
Consider the group homomorphism φ : S3 × S5→ S5 and φ((σ, τ )) = τ .
(a) Determine the kernel of φ. Prove your answer. Call K the kernel.
(b) What are all the left cosets of K in S3× S5 using set builder notation.
(c) What are all the right cosets of K in S3 × S5 using set builder notation.
(d) What is the preimage of an element σ ∈ S5 under φ?
(e) Compare your answers in parts (b)-(d). What do you notice?