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New posts in ideals
Looking for a special class of ideals such that If every ascending chain of ideals from this class stabilizes, then $R$ is a Noetherian ring.
algebraic-geometry
ring-theory
commutative-algebra
ideals
noetherian
Prime/maximal ideals of $\mathbb{C}[x, y]$ containing a given ideal
abstract-algebra
ring-theory
ideals
Intuition for ideal quotient / colon ideal?
ring-theory
commutative-algebra
ideals
Showing that $\lim \sup\limits_{\gamma} \left \|a - a e_{\gamma} \right \| \leq \|a - b\|$ for all $a \in A$ and $b \in J.$
ideals
operator-algebras
c-star-algebras
Ideal of ideal needs not to be an ideal
abstract-algebra
ideals
The set of zero divisors is a prime ideal
commutative-algebra
ideals
Showing that $A/J \cong \mathbb C.$
ideals
operator-algebras
c-star-algebras
quotient-spaces
maximal-and-prime-ideals
Products of ideals is an ideal and comaximal ideals
abstract-algebra
ring-theory
ideals
Primary decomposition of an ideal (exercise 7.8 in Reid, Undergraduate Commutative Algebra) [duplicate]
algebraic-geometry
commutative-algebra
ideals
In $K[X,Y]$, is the power of any prime also primary?
commutative-algebra
ideals
Checking if $\langle 2 \rangle$ is a maximal ideal in $\mathbb{Z}[i]$
abstract-algebra
proof-verification
ring-theory
ideals
Infinite sum of ideals
abstract-algebra
ideals
prove $(n) \supseteq (m)\iff n\mid m\ $ (contains = divides for principal ideals)
elementary-number-theory
ring-theory
divisibility
ideals
Are $(X+1,X), (X^2+4,5)$ and $(X^2+1,X+2)$ maximal or prime?
commutative-algebra
ideals
maximal-and-prime-ideals
If $I$ is a finitely generated ideal of $A[X]$, is $I\cap A$ necessarily finitely generated for a commutative unital ring $A$?
abstract-algebra
commutative-algebra
ring-theory
ideals
Is there a notation for the set of all ideals of a particular ring?
abstract-algebra
notation
ideals
Show that $k[x,y]/(xy-1)$ is not isomorphic to a polynomial ring in one variable.
abstract-algebra
ring-theory
commutative-algebra
ideals
maximal-and-prime-ideals
If $A/I \cong A/J$ as rings and $I\subseteq J,$ then $I=J.$ [duplicate]
abstract-algebra
ring-theory
ideals
noetherian
Why is the arbitrary sum, but not the arbitrary intersection, of ideals an ideal?
abstract-algebra
commutative-algebra
definition
ideals
Showing an ideal is prime in polynomial ring
abstract-algebra
algebraic-geometry
commutative-algebra
ideals
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