Let A be an n × n matrix such that the sum of the elements from each row equals 1. Prove that A has eigenvalue 1. Let A be an n × n matrix such that the sum of the elements from each column is 1. Prove that A has eigenvalue 1

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter5: Orthogonality
Section5.4: Orthogonal Diagonalization Of Symmetric Matrices
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Let A be an n × n matrix such that the sum of the elements from each
row equals 1. Prove that A has eigenvalue 1.
Let A be an n × n matrix such that the sum of the elements from each column is 1. Prove that A has eigenvalue 1.

 

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