3. Let A E B(H) be self-adjoint and AEO(A). Show that there exists a sequence (Un)neN in H with Vn: |vn| = 1 and such th
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3. Let A E B(H) be self-adjoint and AEO(A). Show that there exists a sequence (Un)neN in H with Vn: |vn| = 1 and such th
3. Let A E B(H) be self-adjoint and AEO(A). Show that there exists a sequence (Un)neN in H with Vn: |vn| = 1 and such that Avn - Xun "0. (Therefore, A is called an aproximate eigenvalue of A.)
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