- closed ideal
- Математика: замкнутый идеал
Универсальный англо-русский словарь. Академик.ру. 2011.
closed ideal
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Ideal (order theory) — In mathematical order theory, an ideal is a special subset of a partially ordered set (poset). Although this term historically was derived from the notion of a ring ideal of abstract algebra, it has subsequently been generalized to a different… … Wikipedia
Ideal (mathematics) — In mathematics, ideal may refer to:* ideal (ring theory), a subset of a ring closed under addition and multiplication by elements of the ring * ideal (order theory), a subset of a partially ordered set closed under taking smaller elements (lower… … Wikipedia
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Differentially closed field — In mathematics, a differential field K is differentially closed if every finite system of differential equations with a solution in some differential field extending K already has a solution in K. This concept was introduced by Robinson (1959).… … Wikipedia
Multiplicatively closed set — In abstract algebra, a subset of a ring is said to be multiplicatively closed if it is closed under multiplication (i.e., xy is in the set when x and y are in it) and contains 1 but doesn t contain 0.[1] The condition is especially important in… … Wikipedia
