Question: Using the set-up in the proof of Theorem 8.20, explain why Then prove that bjj = bji, justifying the statement that the restriction of A

Using the set-up in the proof of Theorem 8.20, explain why
η-1 Ayy -Σ y J, . bij y j- j=|

Then prove that bjj = bji, justifying the statement that the restriction of A to VŠ¥ is represented by a symmetric matrix.

-1 Ayy - y J, . bij y j- j=|

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