3 ms·
The blog post https://terrytao.wordpress.com/2019/08/13/eigenvectors-from-eigenvalues/ https://terrytao.wordpress.com/2019/08/13/eigenvectors-from-... is very r
by Recursing 7y ago
The blog post https://terrytao.wordpress.com/2019/08/13/eigenvectors-from-eigenvalues/ https://terrytao.wordpress.com/2019/08/13/eigenvectors-from-... is very readable and interesting
There's a comment with your exact question and the answer "It’s not multiplication, it’s concatenation: stick the column vector after the last column of B to “complete the square”."