Typos in Chapter 15

[PhilPuglisi]

Amazing book!!!

On pages 417 and 418, I see 4 references to Figure 15.3, I think they should be references to Figure 15,2

On page 430, I think the diagonal entries (when lamda2 = -1) for A - lamda2 * I are wrong.
The diagonal entries for A are 1, 3, 6, and since lamda2 is -1, the entries should be:
1 - (-1) = 2, 3 - (-1)= 4, 6 - (-1) = 7, not 1 - 1, 3 - 1, 6 - 1

[mikexcohen]

Hi Phil. Thanks for catching those! That figure reference issue was a typo in the latex code (coincidentally, someone else pointed out that typo just last week). You're also correct about the typo on page 430 -- the eigenvalue is -1, so it should be -(-1) or +1 instead of -1.