Let M_C be a 2 x 2 upper triangular operator matrix acting on the Hilbert space H + K. In this paper, for given operators A and B, we give a new characterization of ∩_{C∈B(K,H) σ_w(M_C), whereσ_w(A) denote the Weyl spectrum of A.
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机译:令M_C是作用在Hilbert空间H + K上的2 x 2上三角算子矩阵。在本文中,对于给定的算子A和B,我们给出∩_{C∈B(K,H)σ_w( M_C),其中σ_w(A)表示A的Weyl光谱。
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