【简答题】设H是Hilbert空间,T:D(T) H→H是自共轭算子.证明
【简答题】设H 1 ,H 2 是Hilbert空间,T:D(T) H 1 →H 2 是线性算子,|·|是D(T)上关于T的图范数.证明T是闭的当且仅当(D(T),|·|)是完备的.
【简答题】GuiZhou is a multi-ethnic province,such as Miao,BuYi,Dong....
【简答题】A.H.TI+T2 B.(1-H.T1)+H.T2 C.T2-H.T1 D.H.T1+(1-H).T2
【简答题】main() { int t,h,m; scanf("%d",&t); h=(t/100)%12; if(h==0)h=12; printf("%d:",h); m=t%100; if(m<10)printf("0"); printf("%d",m); if(t<1200||t===2400) printf("AM"); else printf("PM"); } 若运行时输入:1605<回车>,则...
【单选题】His father mentioned (to me) that Robert (had written to) (him) requesting money (for buying) a new car.