Let S be a subset of a Hilbert space H. Prove that Span(S) is dense in H if and only ifS⊥ = 0.
Question
Let S be a subset of a Hilbert space H. Prove that Span(S) is dense in H if and only ifS⊥ = 0.
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Solution 1
Sure, here is the proof:
First, let's define some terms:
- Span(S) is the smallest subspace of H that contains S.
- S⊥ is the orthogonal complement of S, which is the set of all vectors in H that are orthogonal to every vector in S.
- A subset of a topological space is said to be dense if its clos Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.
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