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idempotent ideal

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  • Radical of an ideal — In ring theory, a branch of mathematics, the radical of an ideal is a kind of completion of the ideal. There are several special radicals associated with the entire ring such as the nilradical and the Jacobson radical , which isolate certain bad… …   Wikipedia

  • Semigroup — This article is about the algebraic structure. For applications to differential equations, see C0 semigroup. In mathematics, a semigroup is an algebraic structure consisting of a set together with an associative binary operation. A semigroup… …   Wikipedia

  • Glossary of ring theory — Ring theory is the branch of mathematics in which rings are studied: that is, structures supporting both an addition and a multiplication operation. This is a glossary of some terms of the subject. Contents 1 Definition of a ring 2 Types of… …   Wikipedia

  • Inverse semigroup — In mathematics, an inverse semigroup S is a semigroup in which every element x in S has a unique inverse y in S in the sense that x = xyx and y = yxy. Inverse semigroups appear in a range of contexts; for example, they can be employed in the… …   Wikipedia

  • Outline of algebraic structures — In universal algebra, a branch of pure mathematics, an algebraic structure is a variety or quasivariety. Abstract algebra is primarily the study of algebraic structures and their properties. Some axiomatic formal systems that are neither… …   Wikipedia

  • Anneau (Mathématiques) — Pour les articles homonymes, voir Anneau. En algèbre générale, un anneau est une structure algébrique sur laquelle deux opérations satisfont certaines des propriétés de l addition et la multiplication des nombres. Sommaire 1 Aspect historique …   Wikipédia en Français

  • Catégorie des anneaux — Anneau (mathématiques) Pour les articles homonymes, voir Anneau. En algèbre générale, un anneau est une structure algébrique sur laquelle deux opérations satisfont certaines des propriétés de l addition et la multiplication des nombres. Sommaire… …   Wikipédia en Français

  • Von Neumann regular ring — In mathematics, a ring R is von Neumann regular if for every a in R there exists an x in R with : a = axa .One may think of x as a weak inverse of a ; note however that in general x is not uniquely determined by a .(The regular local rings of… …   Wikipedia

  • Simple ring — In abstract algebra, a simple ring is a non zero ring that has no ideal besides the zero ideal and itself. A simple ring can always be considered as a simple algebra.According to the Artin Wedderburn theorem, every simple ring that is left or… …   Wikipedia

  • Auflösbar — In diesem Glossar werden kurze Erklärungen mathematischer Attribute gesammelt. Unter einem Attribut wird eine Eigenschaft verstanden, die einem mathematischen Objekt zugesprochen wird. Ein Attribut hat oft die Form eines Adjektivs (endlich, offen …   Deutsch Wikipedia

  • Euklidisch — In diesem Glossar werden kurze Erklärungen mathematischer Attribute gesammelt. Unter einem Attribut wird eine Eigenschaft verstanden, die einem mathematischen Objekt zugesprochen wird. Ein Attribut hat oft die Form eines Adjektivs (endlich, offen …   Deutsch Wikipedia

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