An example of an ideal contained in union of ideals but not contained in any ideal seperatly
9204
Counterexamples to the avoidance lemma for arbitrary ideals
10943
What is an example of a radical of sum of ideals not being equal to the sum of radicals?
53469
C(0, 1) has infinitely many prime ideals not of the form Mp
97740
Homogeneous ideals are contained in homogeneous prime ideals
41629
Structure of ideals in the product of two rings
21604
A complete ring with respect to an ideal
129759
Must an ideal contain the kernel for its image to be an ideal?
150961
An example for a homomorphism that is not an automorphism
146801
Primary decomposition of an ideal
111996
Maximal and Prime Ideal in Z
104784
On the grade of an ideal
11109
The ideal generated by a non-compact operator
87983
Examples of Separable Spaces that are not Second-Countable
100553
Complement of a prime ideal is a subset closed under multiplication, containing 1
131497
Maximal ideal not containing the set of powers of an element is prime
74796
Extension of intersection of ideals
86816
Example of two prime ideals whose intersection of the squares not equal to the square of the intersection