CUHK SEEM PhD面试+笔试2015.02.07[已收錄]

treemantanUID：2770681

~~~LZ都是那天上午哈。。。

第一题补充下哈：C是Hermite Matrix, C=(0,A;A*,0) where A is n*n matrix. prove ||C||_{l2}>=||A||_{l2} where ||A|| is defined by sup ||Ax||/||x|| and l2 is l2 space.


~~~~~~~~
电话通知，GIVE UP