Understanding the ideal $IJ$ in $R$
58425
Defining the Product of Ideals
52966
Rings, ideals and units-proof
54916
Maximal ideal in commutative ring
27766
Comaximal ideals in a commutative ring
96787
Why is the arbitrary sum, but not the arbitrary intersection, of ideals an ideal?
87382
Non-invertible elements form an ideal
100961
Ideals in valuation rings
113136
Generators of the ideal correspond to $d$-uple embedding
7833
Ideal and minimal polynomial
142863
Show that every ideal of the matrix ring $M_n(R)$ is of the form $M_n(I)$ where $I$ is an ideal of $R$
56278
$I$ and $J$ are coprime ideals iff $x \to (x + I, x + J)$ is surjective.
110984
Ideals and prime ideals in a commutative ring.
464
Prove that the ideal $(X_1-a_1,...,X_n-a_n)$ is maximal in $K[X_1,\dots,X_n]$
144250
subideals of an ideal
129371
Maximal ideals in the ring of real functions on $[0,1]$
50908
Showing a Ring and an Ideal are equal
70320
Let $R$ be a commutative Noetherian ring (with unity), and let $I$ be an ideal of $R$ such that $R/I \cong R$. Then is $I=(0)$?