Limit of two matrices each to the kth power and multiplied

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SUMMARY

The discussion focuses on calculating the limit of the product of two square nonnegative primitive matrices, specifically lim (A^k)(B^k) as k approaches infinity. The Perron-Frobenius Theorem is applicable, and the suggested method involves diagonalizing both matrices A and B to compute A^k and B^k before multiplying them. It is essential to leverage the properties of nonnegative primitive matrices and understand the definitions and conditions under which the theorem applies. Key questions raised include the existence of primitive matrices that are not non-negative and the types of matrices suitable for the application of the Perron-Frobenius theorem.

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  • Understanding of the Perron-Frobenius Theorem
  • Knowledge of matrix diagonalization techniques
  • Familiarity with nonnegative primitive matrices
  • Basic concepts of matrix multiplication and limits
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If I have two square nonnegative primitive matrices where the Perron-Frobenius Theorem applies how would I calculate lim (A^k)(B^k) as k approaches infinity.
 
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I'm assuming I would just find A^k and B^k by diagonalization multiply them and then find the limit?
 
You would probably be expected to exploit the properties of those non-negative primitive matrices which P-F can be applied to. I'd start by working though the definitions - bearing in mind what you understand about matrix manipulations. Note: there is a fair amount of overlap between the three conditions:

i.e.
is it possible to have a primitive matrix that is not non-negative?
what sorts of matrices can F-P be applied to?
 

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