Let $R$ be a commutative ring with identity. Show that $R$ is a Noetherian Ring if and only if $M_2(R) = \{\text{2 x 2 matrices with coefficients in } R$} is a Noetherian ring.
I know that $R$ is Noetherian if any of the conditions hold:
- $R$ has the acending chain of ideals condition
- Every ideal in R is finitely generated
- Every nonempty set of partially ordered ideals has a maximal element.
I appreciate any help.