Linear Transformations: Find Eigenvalues & Eigenvectors

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SUMMARY

The discussion focuses on determining the eigenvalues and eigenvectors of the linear transformation T defined on F^n, where T(z_1, z_2, ..., z_n) = (z_1 + ... + z_n, z_1 + ... + z_n, ..., z_1 + ... + z_n). It is established that T can be represented as a matrix, and participants emphasize the importance of understanding the transformation's structure to derive its eigenvalues. The transformation's uniform output suggests at least one eigenvalue is readily identifiable. Clarification is sought regarding the notation "T is in F^n," with the correct interpretation being that T belongs to L(F^n, F^n).

PREREQUISITES
  • Understanding of linear transformations and their properties
  • Familiarity with eigenvalues and eigenvectors
  • Knowledge of matrix representation of linear transformations
  • Basic concepts of vector spaces and fields
NEXT STEPS
  • Study how to express linear transformations as matrices
  • Learn the process of calculating eigenvalues and eigenvectors
  • Explore the implications of uniform outputs in linear transformations
  • Investigate the notation and concepts related to vector spaces, specifically F^n
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Students and professionals in mathematics, particularly those studying linear algebra, as well as educators seeking to enhance their understanding of eigenvalues and eigenvectors in linear transformations.

mivanova
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Please, help me!
Suppose n is a positive integer and T is in F^n is defined by
T(z_1, z_2, ... , z_n) = (z_1+ ... +z_n, z_1+ ... +z_n, ...,z_1+ ... +z_n)
Determine all eigenvalues and eigenvectors of T.
Thank you in advance!
 
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Thanks in advance for what? Telling you the answer? No, that's not going to happen.

Making suggesteins and giving you hints? Hard to do without knowing what you DO know about this problem. And since you have shown nothing at all about what you have tried, we can't know that. Do you, for example, know how to write T as a matrix? Could you find the eigenvalues and eigenvectors then? Since all of the components of the T(z) are the same, no matter what z is, at least one eigenvalue should be obvious. What is T(1, -1, 0, 0, ..., 0)?

I am wondering what, exactly, you mean by "T is in F^n". My first guess would be that F^n is the set of ordered n-tuples of some field F, with component wise addition and scalar multiplication. But in that case it is (z_1, z_2, ..., z_n) that is "in F^n", not T. T is in L(F^n, F^n).
 

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