One of 99 counties in Iowa, United States. County seat: Ida Grove.

A city, the county seat of Ida County, Iowa, United States.

(algebra, ring theory) An ideal which cannot be made any larger (by adjoining any element to it) without making it improper (i.e., equal to the whole of the containing algebraic structure).

(algebra, ring theory) Given a commutative ring R, any ideal I such that for any a,b ∈ R, if ab ∈ I then either b ∈ I or aⁿ ∈ I for some integer n > 0.

A city, the county seat of Bonneville County, Idaho, United States.

One of 44 counties in Idaho, United States. County seat: Grangeville.

(algebra, ring theory) A nonzero (two-sided) ideal that contains no other nonzero two-sided ideal.

(algebra, commutative algebra, ring theory) An ideal I within a ring R that is its own radical (i.e., for any r ∈ R, if rⁿ ∈ I for some positive integer n, then r ∈ I).

Synonym of Bumfuck, Egypt

Synonym of de Moivre's formula