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Inverse limit information


In mathematics, the inverse limit (also called the projective limit) is a construction that allows one to "glue together" several related objects, the precise gluing process being specified by morphisms between the objects. Thus, inverse limits can be defined in any category although their existence depends on the category that is considered. They are a special case of the concept of limit in category theory.

By working in the dual category, that is by reverting the arrows, an inverse limit becomes a direct limit or inductive limit, and a limit becomes a colimit.

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Inverse limit

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In mathematics, the inverse limit (also called the projective limit) is a construction that allows one to "glue together" several related objects, the...

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Direct limit

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colimit in category theory. Direct limits are dual to inverse limits, which are a special case of limits in category theory. We will first give the definition...

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Limit

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Limit of a net Limit point, in topological spaces Limit (category theory) Direct limit Inverse limit Limits (BDSM), activities that a partner feels strongly...

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Profinite group

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group that is isomorphic to the inverse limit of an inverse system of discrete finite groups. In this context, an inverse system consists of a directed...

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Universal property

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product topologies, Stone–Čech compactification, tensor products, inverse limit and direct limit, kernels and cokernels, quotient groups, quotient vector spaces...

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Outline of category theory

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theory)/fiber product Inverse limit Pro-finite group Colimit Coproduct Coequalizer Cokernel Pushout (category theory) Direct limit Biproduct Direct sum...

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Morphism

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both left-inverse and right-inverse, then the two inverses are equal, so f is an isomorphism, and g is called simply the inverse of f. Inverse morphisms...

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Functor

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spaces, construction of free groups and modules, direct and inverse limits. The concepts of limit and colimit generalize several of the above. Universal constructions...

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Lim1

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lim ← ⁡ 1 {\displaystyle \varprojlim {}^{1}} a derived functor of the inverse limit This disambiguation page lists articles associated with the title Lim1...

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Cauchy sequence

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{\displaystyle H.} One can then show that this completion is isomorphic to the inverse limit of the sequence ( G / H r ) . {\displaystyle (G/H_{r}).} An example...

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Topological group

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group (understood to be Hausdorff) is an inverse limit of compact Lie groups. (One important case is an inverse limit of finite groups, called a profinite...

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Hawaiian earring

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John Morgan and Ian Morrison that G {\displaystyle G} embeds into the inverse limit lim ← ⁡ F n {\displaystyle \varprojlim F_{n}} of the free groups with...

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Category theory

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retraction if a right inverse of f exists, i.e. if there exists a morphism g : b → a with f ∘ g = 1b. section if a left inverse of f exists, i.e. if there...

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Cokernel

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Limits Terminal objects Products Equalizers Kernels Pullbacks Inverse limit Colimits Initial objects Coproducts Coequalizers Cokernels and quotients Pushout...

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List of calculus topics

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Limit (mathematics) Limit of a function One-sided limit Limit of a sequence Indeterminate form Orders of approximation (ε, δ)-definition of limit Continuous...

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Commutative diagram

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Limits Terminal objects Products Equalizers Kernels Pullbacks Inverse limit Colimits Initial objects Coproducts Coequalizers Cokernels and quotients Pushout...

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Subcategory

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Limits Terminal objects Products Equalizers Kernels Pullbacks Inverse limit Colimits Initial objects Coproducts Coequalizers Cokernels and quotients Pushout...

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Zero ring

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element 0 in the zero ring is a unit, serving as its own multiplicative inverse. The unit group of the zero ring is the trivial group {0}. The element...

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Ring homomorphism

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conditions imply that additive inverses and the additive identity are preserved too. If in addition f is a bijection, then its inverse f−1 is also a ring homomorphism...

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Field of fractions

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particular, for n , d ≠ 0 {\displaystyle n,d\neq 0} , the multiplicative inverse of n d {\displaystyle {\frac {n}{d}}} is as expected: d n ⋅ n d = 1 {\displaystyle...

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Initial and terminal objects

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(equal to the prime spectrum of the zero ring) is an initial object. A limit of a diagram F may be characterised as a terminal object in the category...

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