Questions tagged [artinian]

For questions on Artinian rings, Artinian modules and related notions.

A (commutative) ring is called Artinian if every descending chain of ideals becomes stationary. For non-commutative rings, the notions of left- and right-Artinian exist, and they apply to left and right ideals respectively. An Artinian non-commutative ring is both left- and right-Noetherian.

More generally, a module is called Artinian if each descending chain of submodules becomes stationary.

A vector space is Artinian if and only if it is of finite dimension if only if is Noetherian.

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Not artinian right module

Let's consider the ring $R = \begin{bmatrix}\Bbb{Q} & 0\\\Bbb{Q(x)} & \Bbb{Q(x)}\end{bmatrix}$, where $\Bbb{Q(x)}$ is the field of fractions of the polynomial ring $\Bbb{Q[x]}$, and the right $R$-module $M = \begin{bmatrix}0 & 0\\\Bbb{Q(x)} &…
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