Eigenvalues of irreducible matrix.












0












$begingroup$


$A in M_{3x3}(mathbb{R})$ is irreducible and non-negaive matrix with three eigenvalues $lambda_1 , lambda_2 , lambda_3$. Can it be true :




  1. $lambda_1 = lambda_2 = lambda_3= varrho (A)$

  2. $lambda_1 =i lambda_2 =-i lambda_3=3$

  3. $lambda_1=2 , lambda_2=-2 , lambda_3=1$

  4. $lambda_1=2 , lambda_2=1 , lambda_3=-1$


I think, that first can't be true, because it comes from Frobenius theorem.But I don't know what about the others. So,
1-No, 2-Yes, 3-No, 4-Yes.










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$endgroup$








  • 1




    $begingroup$
    $det mathbf{A}=prod_{k=1}^{3} lambda_{k}$
    $endgroup$
    – dantopa
    Jan 22 at 23:15


















0












$begingroup$


$A in M_{3x3}(mathbb{R})$ is irreducible and non-negaive matrix with three eigenvalues $lambda_1 , lambda_2 , lambda_3$. Can it be true :




  1. $lambda_1 = lambda_2 = lambda_3= varrho (A)$

  2. $lambda_1 =i lambda_2 =-i lambda_3=3$

  3. $lambda_1=2 , lambda_2=-2 , lambda_3=1$

  4. $lambda_1=2 , lambda_2=1 , lambda_3=-1$


I think, that first can't be true, because it comes from Frobenius theorem.But I don't know what about the others. So,
1-No, 2-Yes, 3-No, 4-Yes.










share|cite|improve this question











$endgroup$








  • 1




    $begingroup$
    $det mathbf{A}=prod_{k=1}^{3} lambda_{k}$
    $endgroup$
    – dantopa
    Jan 22 at 23:15
















0












0








0





$begingroup$


$A in M_{3x3}(mathbb{R})$ is irreducible and non-negaive matrix with three eigenvalues $lambda_1 , lambda_2 , lambda_3$. Can it be true :




  1. $lambda_1 = lambda_2 = lambda_3= varrho (A)$

  2. $lambda_1 =i lambda_2 =-i lambda_3=3$

  3. $lambda_1=2 , lambda_2=-2 , lambda_3=1$

  4. $lambda_1=2 , lambda_2=1 , lambda_3=-1$


I think, that first can't be true, because it comes from Frobenius theorem.But I don't know what about the others. So,
1-No, 2-Yes, 3-No, 4-Yes.










share|cite|improve this question











$endgroup$




$A in M_{3x3}(mathbb{R})$ is irreducible and non-negaive matrix with three eigenvalues $lambda_1 , lambda_2 , lambda_3$. Can it be true :




  1. $lambda_1 = lambda_2 = lambda_3= varrho (A)$

  2. $lambda_1 =i lambda_2 =-i lambda_3=3$

  3. $lambda_1=2 , lambda_2=-2 , lambda_3=1$

  4. $lambda_1=2 , lambda_2=1 , lambda_3=-1$


I think, that first can't be true, because it comes from Frobenius theorem.But I don't know what about the others. So,
1-No, 2-Yes, 3-No, 4-Yes.







matrices






share|cite|improve this question















share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited Jan 22 at 23:15







pawelK

















asked Jan 22 at 23:01









pawelKpawelK

527




527








  • 1




    $begingroup$
    $det mathbf{A}=prod_{k=1}^{3} lambda_{k}$
    $endgroup$
    – dantopa
    Jan 22 at 23:15
















  • 1




    $begingroup$
    $det mathbf{A}=prod_{k=1}^{3} lambda_{k}$
    $endgroup$
    – dantopa
    Jan 22 at 23:15










1




1




$begingroup$
$det mathbf{A}=prod_{k=1}^{3} lambda_{k}$
$endgroup$
– dantopa
Jan 22 at 23:15






$begingroup$
$det mathbf{A}=prod_{k=1}^{3} lambda_{k}$
$endgroup$
– dantopa
Jan 22 at 23:15












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