New posts in Ideals

What is the significance of the quotient $m/m^2$?

Local ring with finite maximal ideal is finite

If $K[X]/I \cong K[X]/J$ with $I \subset J$ then $I=J$?

Rings in which every ideal contains a minimal ideal

Is a p-Sylow subgroup of the underlying additive group of a finite commutative ring an ideal?

Clarifying maps in algebraic number theory

Non-commutative ring Local Ring

How do algebraists intuitively picture normal subgroups and ideals?

Why is the arbitrary sum, but not the arbitrary intersection, of ideals an ideal?

Rings with a given number of (prime, maximal) ideals