3x3 Diagonalizable Matrices over GF(2)

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    3x3 Matrices
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SUMMARY

The discussion centers on the computation of the 8 diagonalizable 3x3 matrices over GF(2), where GF(2) denotes a finite field with entries of 0's and 1's. Participants clarify that diagonalizable matrices do not necessarily have distinct eigenvalues, and that there are 58 diagonalizable matrices in total, contrary to the initial assumption of only 8. The spectral theorem is referenced, emphasizing that diagonalizable matrices need not be symmetric. Additionally, a program was developed to count both invertible and diagonalizable matrices, revealing 168 invertible matrices and 58 diagonalizable matrices.

PREREQUISITES
  • Understanding of linear algebra concepts, specifically diagonalizable matrices and eigenvalues.
  • Familiarity with finite fields, particularly GF(2).
  • Knowledge of the spectral theorem and its implications for matrix diagonalization.
  • Basic programming skills to implement algorithms for matrix computation.
NEXT STEPS
  • Research the properties of diagonalizable matrices over finite fields, focusing on GF(2).
  • Learn how to implement matrix operations in programming languages such as Python or Maple.
  • Explore the spectral theorem in greater depth, particularly its applications in linear algebra.
  • Investigate the relationship between eigenvalues, eigenvectors, and matrix diagonalization.
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Mathematicians, computer scientists, and students involved in linear algebra, particularly those working with finite fields and matrix theory.

  • #31
ArcanaNoir said:
They need not be invertible.



I'm confused about this, first you say the main diagonal can only have non-zero entries, but then you say the main diagonal can have 0's or 1's. Also, diagonalizable is not the same as diagonal, right?
IlikeSerena made a slight grammatical error.

He/she said "the main diagonal can only have non-zero entries". What he/she meant to say was "only the main diagonal can have non-zero entries". The position of the word "only" is crucial!
 
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  • #32
HallsofIvy said:
IlikeSerena made a slight grammatical error.

He/she said "the main diagonal can only have non-zero entries". What he/she meant to say was "only the main diagonal can have non-zero entries". The position of the word "only" is crucial!

thanks for the clarification :)
 

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