Functional Analysis Concepts
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Questions and Answers

In functional analysis, which concept deals with the study of complete normed vector spaces?

  • Hilbert spaces
  • Banach spaces (correct)
  • Metric spaces
  • Topological spaces
  • In functional analysis, what does the term 'Fredholm operator' refer to?

  • Operator with closed range and closed kernel
  • Unbounded operator with compact resolvent
  • Self-adjoint operator on a Hilbert space
  • Compact operator with finite-dimensional kernel and finite-codimensional range (correct)
  • True or false: Any compact operator in a Banach space has a nontrivial closed invariant subspace?

    True

    True or false: In functional analysis, the Arzelà–Ascoli theorem is used to characterize compact sets of functions?

    <p>True</p> Signup and view all the answers

    True or false: The Hahn-Banach theorem states that any bounded linear functional defined on a subspace of a normed vector space can be extended to the whole space?

    <p>True</p> Signup and view all the answers

    True or false: The Banach-Alaoglu theorem states that the closed unit ball in the dual space of a normed vector space is weak*-compact?

    <p>True</p> Signup and view all the answers

    True or false: The Riesz representation theorem in functional analysis states that every bounded linear functional on a Hilbert space is represented by an inner product with a unique element in the space?

    <p>True</p> Signup and view all the answers

    True or false: The open mapping theorem in functional analysis states that a continuous surjective linear mapping between Banach spaces is an open mapping?

    <p>True</p> Signup and view all the answers

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