A maximal ideal is a proper ideal of a ring such that there are no other ideals containing it, except for the ring itself. This concept is significant as it helps in understanding the structure of rings, particularly in the context of Boolean algebras, where maximal ideals correspond to certain types of filters. Maximal ideals play a crucial role in determining properties like the quotient structure of rings and are linked to concepts such as prime ideals and the Zorn's Lemma in algebra.
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