Principal ideal
Ring ideal generated by a single element of the ring / From Wikipedia, the free encyclopedia
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In mathematics, specifically ring theory, a principal ideal is an ideal in a ring that is generated by a single element of through multiplication by every element of The term also has another, similar meaning in order theory, where it refers to an (order) ideal in a poset generated by a single element which is to say the set of all elements less than or equal to in
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The remainder of this article addresses the ring-theoretic concept.