Question: 3. Let T be a lineal operator over a space of Banach. T is calles idempotent if T2 = T. Show that if T

3. Let T be a lineal operator over a space of Banach.

3. Let T be a lineal operator over a space of Banach. T is calles idempotent if T2 = T. Show that if T # 0,1 then it's spectral is o{0, 1}.

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