Let R be a ring and a be a fixed element of R. Let Sa={x∈R∣ax=0}. Show that Sa is a subring of R. [10 marks ]
Posted: Thu Jul 14, 2022 3:57 pm
Let R be a ring and a be a fixed element of R. Let Sa={x∈R∣ax=0}. Show that Sa is a subring of R. [10 marks ]