Let X₁ be a closed subspace and X₂ be a finite dimensional subspace of a normed space X. Prove that X₁ + X₂ is closed in X.

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter5: Inner Product Spaces
Section5.CM: Cumulative Review
Problem 24CM
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Let X₁ be a closed subspace and X₂ be a finite dimensional subspace of a normed
space X. Prove that X₁ + X₂ is closed in X.
Transcribed Image Text:Let X₁ be a closed subspace and X₂ be a finite dimensional subspace of a normed space X. Prove that X₁ + X₂ is closed in X.
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