extension ring
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Ring extension — In mathematics, more specifically in ring theory, a ring extension or extension ring is a ring R with a subring S . We write R / S and say R is a ring extension of S Given an extension R / S of commutative rings and a prime ideal P of R , it… … Wikipedia
Extension (mathematics) — In mathematics, the word extension has many uses. See:Analysis* Carathéodory s extension theorem * Continuous linear extension * M. Riesz extension theorem * Krein extension theorem * Hahn Banach theoremAlgebra* Abelian extension * Algebraic… … Wikipedia
Ring Road (Regina) — Ring Road is a 4 lane controlled access highway in Regina, Saskatchewan, Canada. It is an extension of the Trans Canada Highway that bypasses the city on the north east side. Ring Road has a speed limit of 100km/h (about 62mph) and consists of 7… … Wikipedia
Ring Indicator — Ring Indicator, abbreviated as RI, is a signal that exists inside an RS232 serial communications cable that goes between a computer and a modem. The signal is sent from the modem to the computer, typically over pin 9 of a nine pin (DE9) serial… … Wikipedia
Ring Road, Delhi — This article is about the Inner Ring Road of New Delhi. For the Outer Ring Road, see Outer Ring Road, New Delhi. Delhi features 2 ring roads, a main one and an outer one. The two ring roads have a combined length of 87 km.Delhi s Inner Ring Road… … Wikipedia
Extension and contraction of ideals — In commutative algebra, the extension and contraction of ideals are operations performed on sets of ideals. Extension of an ideal Let A and B be two commutative rings with unity, and let f : A → B be a (unital) ring homomorphism. If mathfrak{a}… … Wikipedia
Extension of scalars — In abstract algebra, extension of scalars is a means of producing a module over a ring S from a module over another ring R, given a homomorphism f : R o S between them. Intuitively, the new module admits multiplication by more scalars than the… … Wikipedia
Ring roads of Beijing — Beijing is one of the very few cities to possess multiple ring roads (or beltways). Among the rarest seen anywhere in a major city in the world is Beijing s 2nd Ring Road, which is extremely central to Tian anmen, the centre of Beijing.1st Ring… … Wikipedia
Ring road — For other uses, see Ring road (disambiguation). Inner ring road of Sheffield, England … Wikipedia
Extension de Thébé — Anneau gossamer L anneau gossamer (littéralement « gaze » en anglais) est un anneau de la planète Jupiter. Sommaire 1 Caractéristiques 2 Voir aussi 2.1 Liens internes 2.2 … Wikipédia en Français
Ring belge N203a — Route nationale 203a (Belgique) Route nationale 203 Contournement de Hal Longueur: 4,1 km Croisements, rond points et sorties … Wikipédia en Français