1
$\begingroup$

Is there necessary and sufficient condition on whether a symmetric circulant matrix is non-singular? I found many example supporting that positive symmetric circulant matrices which has at least two different entries are non-singular.

$\endgroup$
  • 1
    $\begingroup$ Clearly$$\pmatrix{a&b&a&b\cr b&a&b&a\cr a&b&a&b\cr b&a&b&a\cr}$$is singular. $\endgroup$ – David Dec 15 '14 at 5:45

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.