Cupidity 发表于 2025-3-25 05:08:09
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M. Schmauss,M. Bergener,H. J. Möllerd linear operators always mean real ones if they are not otherwise specified. However, they are all obtained as a real part (in a certain sense) of some complex Banach spaces, Hilbert spaces or complex linear operators. This means that we can fortunately utilize the powerful tools developed in Compl红肿 发表于 2025-3-25 21:20:18
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