Given U_1, ..., U_m, a collection of subspaces of some vector space V, recall that U_1 + ... + U_m is defined to be the space of all vectors which can be expressed as u_1 + ... + u_m where each u_k is a vector in the subspace U_k. Well U_1 + ... + U_m is called a direct sum if each of its vectors can be expressed uniquely as u_1 + ... + u_m. Give a specific example of a direct sum of vector subsp

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter4: Vector Spaces
Section4.4: Spanning Sets And Linear Independence
Problem 74E: Let u, v, and w be any three vectors from a vector space V. Determine whether the set of vectors...
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Given U_1, ..., U_m, a collection of subspaces of some vector space V, recall that U_1 + ... + U_m is defined to be the space of all vectors which can be expressed as u_1 + ... + u_m where each u_k is a vector in the subspace U_k. Well U_1 + ... + U_m is called a direct sum if each of its vectors can be expressed uniquely as u_1 + ... + u_m. Give a specific example of a direct sum of vector subspaces, and prove that your example is, indeed, a direct sum.

 

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