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Injective tensor product information


In mathematics, the injective tensor product of two topological vector spaces (TVSs) was introduced by Alexander Grothendieck and was used by him to define nuclear spaces. An injective tensor product is in general not necessarily complete, so its completion is called the completed injective tensor products. Injective tensor products have applications outside of nuclear spaces. In particular, as described below, up to TVS-isomorphism, many TVSs that are defined for real or complex valued functions, for instance, the Schwartz space or the space of continuously differentiable functions, can be immediately extended to functions valued in a Hausdorff locally convex TVS without any need to extend definitions (such as "differentiable at a point") from real/complex-valued functions to -valued functions.

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Injective tensor product

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An injective tensor product is in general not necessarily complete, so its completion is called the completed injective tensor products. Injective tensor...

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Topological tensor product

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Inductive tensor product – binary operation on topological vector spacesPages displaying wikidata descriptions as a fallback Injective tensor product Projective...

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Tensor product

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v\otimes w} is called the tensor product of v and w. An element of V ⊗ W {\displaystyle V\otimes W} is a tensor, and the tensor product of two vectors is sometimes...

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Integral linear operator

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ϵ Y {\displaystyle X{\widehat {\otimes }}_{\epsilon }Y} , the injective tensor product of the locally convex topological vector spaces (TVSs) X and Y...

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Tensor product of modules

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In mathematics, the tensor product of modules is a construction that allows arguments about bilinear maps (e.g. multiplication) to be carried out in terms...

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Projective tensor product

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Inductive tensor product – binary operation on topological vector spacesPages displaying wikidata descriptions as a fallback Injective tensor product Tensor product...

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Tensor product of fields

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In mathematics, the tensor product of two fields is their tensor product as algebras over a common subfield. If no subfield is explicitly specified, the...

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List of topologies

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topology Inductive tensor product Injective tensor product Projective tensor product Tensor product of Hilbert spaces Topological tensor product Émery topology...

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Nuclear space

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_{1}\right)} is nuclear, this tensor product is simultaneously the injective tensor product and projective tensor product). In short, the Schwartz kernel...

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Metric tensor

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metric field on M consists of a metric tensor at each point p of M that varies smoothly with p. A metric tensor g is positive-definite if g(v, v) > 0 for...

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Schauder basis

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K(X) of compact operators on X is isometrically isomorphic to the injective tensor product X ′ ⊗ ^ ε X ≃ K ( X ) . {\displaystyle X'{\widehat {\otimes }}_{\varepsilon...

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Inductive tensor product

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vector space (TVS) topology on X ⊗ Y , {\displaystyle X\otimes Y,} the tensor product of two locally convex TVSs, making the canonical map ⋅ ⊗ ⋅ : X × Y →...

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Algebraically compact module

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between the tensor products C ⊗ M → C ⊗ K is injective for every right R-module C. The module M is pure-injective if any pure injective homomorphism...

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Banach space

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algebraic tensor product X ⊗ Y {\displaystyle X\otimes Y} equipped with the projective tensor norm, and similarly for the injective tensor product X ⊗ ^ ε...

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Lp space

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{\displaystyle L^{p}(\Omega ,\Sigma ,\mu )\otimes _{\pi }E,} and the injective tensor product, denoted by L p ( Ω , Σ , μ ) ⊗ ε E . {\displaystyle L^{p}(\Omega...

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Injective hull

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mathematics, particularly in algebra, the injective hull (or injective envelope) of a module is both the smallest injective module containing it and the largest...

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Matrix product state

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Matrix Product States and Projected Entangled Pair States Hand-waving and Interpretive Dance: An Introductory Course on Tensor Networks Tensor Networks...

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Schwartz kernel theorem

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Banach spacePages displaying wikidata descriptions as a fallback Injective tensor product Nuclear operator – Linear operator related to topological vector...

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Spaces of test functions and distributions

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completion of the injective tensor product (which in this case is the identical to the completion of the projective tensor product). Tempered distributions...

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Nuclear operator

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Inductive tensor product – binary operation on topological vector spacesPages displaying wikidata descriptions as a fallback Injective tensor product Locally...

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Complete topological vector space

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completions, the completions of topological tensor products, such as projective tensor products or injective tensor products, of the Banach space ℓ 1 ( S ) {\displaystyle...

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Minkowski space

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provide a basis for the cotangent space at p. The tensor product (denoted by the symbol ⊗) yields a tensor field of type (0, 2), i.e. the type that expects...

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Von Neumann algebra

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tensor product of two von Neumann algebras acting on two Hilbert spaces is defined to be the von Neumann algebra generated by their algebraic tensor product...

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List of commutative algebra topics

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reduced rings Dual numbers Tensor product of fields Tensor product of R-algebras Quotient ring Field of fractions Product of rings Annihilator (ring theory)...

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Inner product space

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(the injective homomorphism V → V ∗ {\displaystyle V\to V^{*}} ) and thus hold more generally. The term "inner product" is opposed to outer product, which...

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List of abstract algebra topics

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module Projective cover Swan's theorem Quillen–Suslin theorem Injective module Injective hull Flat module Flat cover Coherent module Finitely-generated...

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