本文了加权Ｂｅｒｇｍａｎ空间上的Ｔｏｅｐｌｉｔｚ代数Ｊ（Ｃ（－／Ｄ））得到下合到Ｏ→Ｘ→Ｊ（Ｃ（－／Ｄ））→Ｃ（－／Ｄ）／Ｃ（Ｄ））→，作为应用，刻划了Ｔｏｅｐｌｉｔｚ代数算子的本质谱。......

设A和B是含单位元的C*代数,s∈A和t∈B是可逆自伴元.对任意的x∈A及z∈B,定义x+=s-1x*s,z+=t-1z*t.假定A是实秩零的并且φ:A→B是......

<正>Let A and B be C*-algebras. An extension of B by A is a short exact sequence 0 →A -→E→B→0. (*) Suppose that A is......