Advanced Functional Analysis Mastery Quiz Instructions: . No partial credit will be awarded; any mistake will result in a score of 0. Submit your solution before the deadline. Ensure your solution is detailed, and all steps are well-documented No Al tools (such as Chat GPT or others) may be used to assist in solving the problems. All work must be your own. Solutions will be checked for Al usage and plagiarism. Any detected violation will result in a score of 0. Problem Let X and Y be Banach spaces, and T: XY be a bounded linear operator. Consider the following tasks 1. [Operator Norm and Boundedness] a. Prove that for any bounded linear operator T: XY the norm of satisfies: Tsup ||T(2)||. 2-1 b. Show that if T' is a bounded linear operator on a Banach space and T <1, then the operatur 1-T is inverüble, and (IT) || ST7 2. [Weak and Strong Convergence] a Define weak and strong convergence in a Banach space .X. Provide examples of sequences that converge weakly but not strongly, and vice versa. b. Prove that weak convergence in a Banach space is sequentially continuous with respect to the continuous dual space X, ie, if → z weakly in X, then p()+4(a) for all X*. 3. [Compact Operators and Spectral Theoryl a. Show that every compact operator on a Banach space it continuous b. Prove that if I' is a compact operator on a Banach space, then the spectrum of 7', denoted (T), consists of the set of eigenvalues where each is an isolated point of the spectrum. and the only possible accumulation point of the spectrum is zero. 4. [Fredholm Operators and Index] a. Define a Fredholm operator on a Banach space. State and prove the Fredholm Alternative theorem, which asserts that for a Fredholm operator 7, the equation Try has a solution if and only if y is orthogonal to the range of the adjoint operator". b. Prove that the index of a Fredholm operator is constant under compact perturbations. Specifically, if I is a Fredholm operator and S is a compact operator, show that index(T" + S)-index(T). 5. [Spectral Theorem and Normal Operators] a. State and prove the Spectral Theorem for bounded normal operators on a Hilbert space. Use the theorem to show that any normal operator on a Hilbert space can be diagonalized by a unitary matris. b. Let A be a self-adjoint operator on a Hilbert space H. Prove that the spectrum of A, denoted (4), les entirely on the real line, Le.. (A) R.

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Advanced Functional Analysis Mastery Quiz
Instructions:
.
No partial credit will be awarded; any mistake will result in a score of 0.
Submit your solution before the deadline.
Ensure your solution is detailed, and all steps are well-documented
No Al tools (such as Chat GPT or others) may be used to assist in solving the problems. All work
must be your own.
Solutions will be checked for Al usage and plagiarism. Any detected violation will result in a
score of 0.
Problem
Let X and Y be Banach spaces, and T: XY be a bounded linear operator. Consider the
following tasks
1. [Operator Norm and Boundedness] a. Prove that for any bounded linear operator T: XY
the norm of satisfies:
Tsup ||T(2)||.
2-1
b. Show that if T' is a bounded linear operator on a Banach space and T <1, then the
operatur 1-T is inverüble, and (IT) || ST7
2. [Weak and Strong Convergence] a Define weak and strong convergence in a Banach space .X.
Provide examples of sequences that converge weakly but not strongly, and vice versa.
b. Prove that weak convergence in a Banach space is sequentially continuous with respect to the
continuous dual space X, ie, if → z weakly in X, then p()+4(a) for all X*.
3. [Compact Operators and Spectral Theoryl a. Show that every compact operator on a Banach
space it continuous
b. Prove that if I' is a compact operator on a Banach space, then the spectrum of 7', denoted
(T), consists of the set of eigenvalues where each is an isolated point of the spectrum.
and the only possible accumulation point of the spectrum is zero.
4. [Fredholm Operators and Index] a. Define a Fredholm operator on a Banach space. State and
prove the Fredholm Alternative theorem, which asserts that for a Fredholm operator 7, the
equation Try has a solution if and only if y is orthogonal to the range of the adjoint
operator".
b. Prove that the index of a Fredholm operator is constant under compact perturbations.
Specifically, if I is a Fredholm operator and S is a compact operator, show that index(T" +
S)-index(T).
5. [Spectral Theorem and Normal Operators] a. State and prove the Spectral Theorem for
bounded normal operators on a Hilbert space. Use the theorem to show that any normal
operator on a Hilbert space can be diagonalized by a unitary matris.
b. Let A be a self-adjoint operator on a Hilbert space H. Prove that the spectrum of A, denoted
(4), les entirely on the real line, Le.. (A) R.
Transcribed Image Text:Advanced Functional Analysis Mastery Quiz Instructions: . No partial credit will be awarded; any mistake will result in a score of 0. Submit your solution before the deadline. Ensure your solution is detailed, and all steps are well-documented No Al tools (such as Chat GPT or others) may be used to assist in solving the problems. All work must be your own. Solutions will be checked for Al usage and plagiarism. Any detected violation will result in a score of 0. Problem Let X and Y be Banach spaces, and T: XY be a bounded linear operator. Consider the following tasks 1. [Operator Norm and Boundedness] a. Prove that for any bounded linear operator T: XY the norm of satisfies: Tsup ||T(2)||. 2-1 b. Show that if T' is a bounded linear operator on a Banach space and T <1, then the operatur 1-T is inverüble, and (IT) || ST7 2. [Weak and Strong Convergence] a Define weak and strong convergence in a Banach space .X. Provide examples of sequences that converge weakly but not strongly, and vice versa. b. Prove that weak convergence in a Banach space is sequentially continuous with respect to the continuous dual space X, ie, if → z weakly in X, then p()+4(a) for all X*. 3. [Compact Operators and Spectral Theoryl a. Show that every compact operator on a Banach space it continuous b. Prove that if I' is a compact operator on a Banach space, then the spectrum of 7', denoted (T), consists of the set of eigenvalues where each is an isolated point of the spectrum. and the only possible accumulation point of the spectrum is zero. 4. [Fredholm Operators and Index] a. Define a Fredholm operator on a Banach space. State and prove the Fredholm Alternative theorem, which asserts that for a Fredholm operator 7, the equation Try has a solution if and only if y is orthogonal to the range of the adjoint operator". b. Prove that the index of a Fredholm operator is constant under compact perturbations. Specifically, if I is a Fredholm operator and S is a compact operator, show that index(T" + S)-index(T). 5. [Spectral Theorem and Normal Operators] a. State and prove the Spectral Theorem for bounded normal operators on a Hilbert space. Use the theorem to show that any normal operator on a Hilbert space can be diagonalized by a unitary matris. b. Let A be a self-adjoint operator on a Hilbert space H. Prove that the spectrum of A, denoted (4), les entirely on the real line, Le.. (A) R.
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