Let A: X₁ ≤X → Y be a closed operator where X and Y are Banach spaces. Define ||x|| = ||x||+||Ax||, x€ X₁. Then show that the norm ||-|| is complete.

Elementary Linear Algebra (MindTap Course List)
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Chapter4: Vector Spaces
Section4.2: Vector Spaces
Problem 38E: Determine whether the set R2 with the operations (x1,y1)+(x2,y2)=(x1x2,y1y2) and c(x1,y1)=(cx1,cy1)...
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Let A: X₁ ≤X → Y be a closed operator where X and Y are Banach spaces.
Define ||x|| = ||x||+||Ax||, x€ X₁.
Then show that the norm ||-|| is complete.
Transcribed Image Text:Let A: X₁ ≤X → Y be a closed operator where X and Y are Banach spaces. Define ||x|| = ||x||+||Ax||, x€ X₁. Then show that the norm ||-|| is complete.
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