In category theory, a branch of mathematics, the abstract notion of a limit captures the essential properties of universal constructions such as products...
28 KB (4,352 words) - 03:41, 22 March 2024
In category theory, the product of two (or more) objects in a category is a notion designed to capture the essence behind constructions in other areas...
14 KB (2,379 words) - 17:32, 11 September 2024
concept of limit in category theory. By working in the dual category, that is by reversing the arrows, an inverse limit becomes a direct limit or inductive...
15 KB (2,275 words) - 01:49, 5 November 2024
In category theory, a branch of mathematics, a pushout (also called a fibered coproduct or fibered sum or cocartesian square or amalgamated sum) is the...
13 KB (1,941 words) - 22:41, 24 August 2024
category theory, a branch of mathematics, a pullback (also called a fiber product, fibre product, fibered product or Cartesian square) is the limit of...
15 KB (1,978 words) - 02:10, 30 July 2024
In category theory, a branch of mathematics, the cone of a functor is an abstract notion used to define the limit of that functor. Cones make other appearances...
6 KB (924 words) - 07:40, 5 March 2024
the limit depends on the system of homomorphisms. Direct limits are a special case of the concept of colimit in category theory. Direct limits are dual...
12 KB (2,076 words) - 01:46, 5 November 2024
Cokernel Pushout (category theory) Direct limit Biproduct Direct sum Preadditive category Additive category Pre-Abelian category Abelian category Exact sequence...
5 KB (402 words) - 15:20, 29 March 2024
Category theory is a general theory of mathematical structures and their relations. It was introduced by Samuel Eilenberg and Saunders Mac Lane in the...
34 KB (3,829 words) - 10:16, 20 November 2024
Coproduct (redirect from Coproduct (category theory))
In category theory, the coproduct, or categorical sum, is a construction which includes as examples the disjoint union of sets and of topological spaces...
12 KB (2,129 words) - 00:42, 19 June 2024
Equaliser (mathematics) (redirect from Equalizer (category theory))
common throughout category theory for any binary equaliser. In the case of a preadditive category (a category enriched over the category of Abelian groups)...
8 KB (1,134 words) - 14:13, 10 August 2024
found in category theory, where limits (and co-limits) in a more general sense are considered. The categorical concept of limit-preserving and limit-reflecting...
8 KB (1,244 words) - 11:08, 2 November 2024
In the mathematical field of category theory, the category of sets, denoted as Set, is the category whose objects are sets. The arrows or morphisms between...
9 KB (1,172 words) - 14:28, 4 July 2024
Limit of a net Limit point, in topological spaces Limit (category theory) Direct limit Inverse limit Limits (BDSM), activities that a partner feels strongly...
2 KB (348 words) - 17:54, 23 May 2024
limit and direct limit in category theory. The limit inferior and limit superior provide generalizations of the concept of a limit which are particularly...
36 KB (5,973 words) - 16:26, 21 November 2024
Initial and terminal objects (redirect from Pointed category)
In category theory, a branch of mathematics, an initial object of a category C is an object I in C such that for every object X in C, there exists precisely...
11 KB (1,336 words) - 16:25, 21 January 2024
Tannakian formalism (redirect from Tannakian category)
generalise the category of linear representations of an algebraic group G defined over K. A number of major applications of the theory have been made...
7 KB (834 words) - 07:36, 5 August 2024
object. A simple example is the category of sets, whose objects are sets and whose arrows are functions. Category theory is a branch of mathematics that...
21 KB (2,525 words) - 15:16, 17 October 2024
In mathematics, higher category theory is the part of category theory at a higher order, which means that some equalities are replaced by explicit arrows...
9 KB (944 words) - 09:25, 24 April 2024
In category theory, a branch of mathematics, duality is a correspondence between the properties of a category C and the dual properties of the opposite...
5 KB (713 words) - 00:15, 6 March 2024
specifically category theory, a quasi-category (also called quasicategory, weak Kan complex, inner Kan complex, infinity category, ∞-category, Boardman complex...
9 KB (1,178 words) - 10:40, 30 October 2024
In mathematics, particularly in homotopy theory, a model category is a category with distinguished classes of morphisms ('arrows') called 'weak equivalences'...
18 KB (2,402 words) - 15:12, 12 October 2024
In category theory, a branch of mathematics, a diagram is the categorical analogue of an indexed family in set theory. The primary difference is that in...
9 KB (1,214 words) - 22:03, 31 July 2024
Adjoint functors (redirect from Unit (category theory))
In mathematics, specifically category theory, adjunction is a relationship that two functors may exhibit, intuitively corresponding to a weak form of...
63 KB (9,976 words) - 01:52, 7 November 2024
category is a category in which all small limits exist. That is, a category C is complete if every diagram F : J → C (where J is small) has a limit in...
5 KB (664 words) - 00:51, 31 March 2020
Functor (redirect from Functor (category theory))
In mathematics, specifically category theory, a functor is a mapping between categories. Functors were first considered in algebraic topology, where algebraic...
24 KB (3,513 words) - 19:52, 25 October 2024
Ind-completion (redirect from Pro-category)
(2009). Direct limit – Special case of colimit in category theory Inverse limit – Construction in category theory completions in category theory Illusie, Luc...
11 KB (1,659 words) - 03:01, 22 July 2024
In category theory, a branch of mathematics, the image of a morphism is a generalization of the image of a function. Given a category C {\displaystyle...
10 KB (1,822 words) - 10:32, 15 November 2024
In category theory, a branch of mathematics, a presheaf on a category C {\displaystyle C} is a functor F : C o p → S e t {\displaystyle F\colon C^{\mathrm...
8 KB (1,185 words) - 01:01, 5 November 2024
Gluing axiom (category Limits (category theory))
{\displaystyle {\mathcal {F}}} turns colimits of such diagrams into limits. In some categories, it is possible to construct a sheaf by specifying only some of...
10 KB (1,843 words) - 03:33, 5 November 2024