标签：Eige - 华人论坛

在加拿大 for the english phd students: How can i proof this: if A, B are real symmetric matrices and A is a submatrix on the leading diagonal of B, e.g. B=[A, C ; C', D] then lambda_max(B)=lambda_max(A) and lambda_min(B)=lambda_min(A), where lambda_...华人论坛