An element a of a ring R is idempotent if a2 = a.
a. Show that the set of all idempotent elements of a commutative ring is closed under multiplication.
b. Find all idempotents in the ring ℤ6 × ℤ12.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.