In Watkins it is shown that if k is a simple eigenvalue of then is a lower bound for the condition number of an eigenvector corresponding to k Under what conditions will this formula indicate that...

In Watkins

it is shown that if

_k
is a simple eigenvalue of

then

is a lower bound for the condition number of an eigenvector corresponding to

_k

Under what conditions will this formula indicate that an eigenvector is ill-conditioned