Suppose that N is admissible and U is a weakly closed Alg(N)-module. It is shown that there exist unitary operators in U if and only if I- = I and for any N > 0, N- > 0.

 
  • 假設套N是可接受的;則得到弱閉Alg(N)-模u中存在酉算子的充要條件是I-=I且對任意 M>0;有N->0.
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