Ideal correspondence for quotients
Ideals of R containing I are in bijection with ideals of the quotient ring R/I.
Ideal correspondence for quotients
Ideal correspondence for quotients: Let be a ring and let be a two-sided ideal, with quotient map . The assignment
is a bijection between two-sided ideals with and two-sided ideals of , with inverse . This correspondence preserves inclusion and carries sums and intersections to sums and intersections.
This is the ring form of the Correspondence Theorem applied to the canonical epimorphism , and it explains how ideals in a quotient ring lift and descend. In particular, prime ideals and maximal ideals of correspond to those of that contain (in the commutative setting).