- #1
charikaar
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I would be grateful for some help/tips/with this question.
Let (V,<,>) be a complex inner product space with an orthonormal basis {v1,v2,...vn}. Let L:V------>V be a linear operator. Explain what is meant by saying that L is self-adjoint. Let A=a_ij be the matrix representing L with respect to the basis {v1,...v_n}. prove the following.
i) L is self-adjoint if and only if <Lvi,vj>=<vi,Lvj>.
ii) a_ij=<Lvj,vi>.
L is self adjoint means L = L*, but we know L* is the one and unique operator for which <Lv, u> = <v, L*u> for all u,v. How do i prove i) and ii).
Thanks
Let (V,<,>) be a complex inner product space with an orthonormal basis {v1,v2,...vn}. Let L:V------>V be a linear operator. Explain what is meant by saying that L is self-adjoint. Let A=a_ij be the matrix representing L with respect to the basis {v1,...v_n}. prove the following.
i) L is self-adjoint if and only if <Lvi,vj>=<vi,Lvj>.
ii) a_ij=<Lvj,vi>.
L is self adjoint means L = L*, but we know L* is the one and unique operator for which <Lv, u> = <v, L*u> for all u,v. How do i prove i) and ii).
Thanks