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acyclic object

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  • Acyclic object — In mathematics, in the field of homological algebra, given an abelian category mathcal{C} having enough injectives and an additive (covariant) functor :F :mathcal{C} omathcal{D},an acyclic object with respect to F, or simply an F acyclic object,… …   Wikipedia

  • Object-oriented design — OOD redirects here. OOD may also refer to Officer of the Deck, Officer of the day, or the Ood. Object oriented design is the process of planning a system of interacting objects for the purpose of solving a software problem. It is one approach to… …   Wikipedia

  • Hierarchy (object-oriented programming) — In computer science s object oriented programming, the mapped relationships of sub and superclasses is known as a hierarchy. This can be visualized as an upside down tree (or perhaps a pyramid), the top of which is known as the root. An exception …   Wikipedia

  • List of mathematics articles (A) — NOTOC A A Beautiful Mind A Beautiful Mind (book) A Beautiful Mind (film) A Brief History of Time (film) A Course of Pure Mathematics A curious identity involving binomial coefficients A derivation of the discrete Fourier transform A equivalence A …   Wikipedia

  • Grothendieck spectral sequence — In mathematics, in the field of homological algebra, the Grothendieck spectral sequence is a technique that allows one to compute the derived functors of the composition of two functors Gcirc F, from knowledge of the derived functors of F and G… …   Wikipedia

  • Model category — In mathematics, particularly in homotopy theory, a model category is a category with distinguished classes of morphisms ( arrows ) called weak equivalences , fibrations and cofibrations . These abstract from a conventional homotopy category, of… …   Wikipedia

  • Prinzipien Objektorientierten Designs — sind Prinzipien welche zu gutem objektorientierten Design führen sollen. Sie wurden neben anderen von Robert C. Martin, Bertrand Meyer und Barbara Liskov publiziert und propagiert. Viele Techniken der Objektorientierung wie Entwurfsmuster, Domain …   Deutsch Wikipedia

  • Olefinmetathese — Die Alkenmetathese (auch Olefinmetathese; von griech. Meta: Wechsel und Thesis: Position), ist eine chemische Reaktion, bei der formal die Alkylidengruppen zwischen Alkenen ausgetauscht werden, wobei statistisch verteilte Produktgemische… …   Deutsch Wikipedia

  • Schedule (computer science) — In the fields of databases and transaction processing (transaction management), a schedule (also called history) of a system is an abstract model to describe execution of transactions running in the system. Often it is a list of operations… …   Wikipedia

  • Edge coloring — A 3 edge coloring of the Desargues graph. In graph theory, an edge coloring of a graph is an assignment of “colors” to the edges of the graph so that no two adjacent edges have the same color. For example, the figure to the right shows an edge… …   Wikipedia

  • Injective sheaf — In mathematics, injective sheaves of abelian groups are used to construct the resolutions needed to define sheaf cohomology (and other derived functors, such as sheaf Ext .). There is a further group of related concepts applied to sheaves: flabby …   Wikipedia

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